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Legend Irr column: ^ stands for slow and irregular germination Germ Days: L stands for needs light and D stands for needs darkness Sow Depth: JC stands for just barely cover and S stands for scatter - don't cover
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Annuals, Perennials and Bulbs
Variety Type Germ Days Irr Temp Media Sow Depth Comments - Links
Abarema GP 7-56 70-75 Peaty 1/4" To scarify, rub between emery paper.
Abelmoschus HHA 15-30 75-80 Well drained 1/16" Soak 1 hr in lukewarm water before sowing.
Abutilon HHSh 21-30 ˆ 70-80 Peaty JC
Acacia HHSh 21 70-80 Well drained 1/16" See No. 13. Soak in warm water for 4 hours.
Acaena HP 30-100 ˆ 50-60 Well drained 1/4"
Acanthus HP 21-25 50-55 Peaty 1/4".
Achillea HP 30-100 L ˆ 60-65 Well drained S Reduce soil temperature at night.
Achimenes GP 21-30 65-75 Well drained S See No. 5. Seed is very small.
Acnistus HHSh 21-42 55-65 Well drained 1/16"
Aconitum HP 5-270 L ˆ 55-60 Well drained 1/16" See Nos. 6 14. Place in fridge for 6 wks.
Actaea HP 30-365 ˆ 55-60 Well drained JC See No. 14. (Pre-chill for 6-8 weeks).
Actinidia HP 60-90 ˆ 50 Well drained 1/8" Male/Female flowers on separate plants.
Adansonia GSh 21-365 ˆ 70-80 Peaty 1/16" Soak in hand hot water. See No. 13.
Adenanthera GSh 30-90 70-75 Well drained JC See No. 13. Soak in hot water.
Adenium GSh 7-14 L 65-70 Verywelldrained JC
Adenophora HP 30-90 ˆ 50-55 Well drained S
Adonis HA, HP 30-120 ˆ 60-65 Well drained JC
Aechmia GP 7-90 L ˆ 60-70 Peaty S See No. 5.
Aethionema HP 30-90 ˆ 60-65 Well drained JC
Agapanthus HHP 30-90 60-65 Well drained JC
Agastache HP 30-90 55 Well drained 1/16"
Agave GP 30-90 L ˆ 55 Well drained S
Ageratum HHA 10-14 L 70-75 Well drained S
Agrostemma HA 14-21 55-65 Well drained 1/8" Can be sown in situ
Alchemilla HP 21-30 60-70 Well drained 1/8"
Allium HBb 30-365 L 50 Well drained JC See No. 14. Place in fridge for 4 weeks.
Aloe GP 30-180 L 70 Well drained S
Alonsoa HHA 14-21 60 Well drained 1/16" Cover seed with silver sand.
Alpina GP 30-90 70-75 Peaty 1/8"
Alstroemeria HP 30-365 ˆ 65-70 Peaty 1/16" See No. 13. Soak in warm water, sow singly in pots.
Alyssum HA 7-14 L 55-75 Peaty S Annuals can be sown in situ.
Amaranthus HHA 10-15 70-75 Peaty 1/16"
Amaryllis HHBb 21-70 ˆ 65-75 Peaty 1/16" Do not dry off in first yr after sowing.
Ammi HHA 7-21 55-65 Well drained 1/16"
Ammobium HHA 10-15 60 Well drained 1/16"
Anacampseros GP 30-90 L ˆ 65-70 Well drained S
Anacyclus HP 30-60 L ˆ 55-60 Well drained JC See No. 14. (Pre-chill for 3 weeks.)
Anagallis HHA 30-42 50-65 Well drained 1/8"
Anaphalis HP 30-60 55-65 Well drained JC
Anchusa HA, HP 7-30 70 Well drained 1/16" Can be sown in situ
Androsace HP 30-365 ˆ 50-55 Well drained S See No. 16.
Anemone HP 28-180 ˆ 65-70 Well drained JC See No. 6.
Anemonopsis HP 30-18O L ˆ 55-60 Well drained S Sow in lime free compost.
Anigozanthus GP 30-90 L 60-65 Peaty S See No. 5.
Anoda HHA 14-21 55-65 Well drained 1/4" Can be sown in situ
Antennaria HP 30-69 55-60 Well drained JC Just cover with silver sand.
Anthemis HP 0-14 70 Well drained S
Anthericum HP 30-90 50 Well drained 1/8"
Anthriscus HP, HB 14-21 55-65 Well drained 1/4" Usually sown in situ
Anthyllis HP 30-60 50 Well drained 1/8" See No. 13. Soak in warm water overnight.
Antigonon GP 21-30 65-70 Well drained JC
Antirrhinum HHA 10-21 L 65-75 Peaty S
Aphyllanthes HP 21-56 ˆ 55-60 Peaty JC
Aquilegia HP 30-90 L ˆ 65-75 Well drained S See No. 6 or 14. Pre-chill 3 wks. Keep below 70°F
Arabis HP 20-25 L 70 Well drained S Can be sown in situ.
Arachis GA 7-21 70-75 Peaty 1/4" Sow, cover with plastic until germination.
Araujia HHSh 90-180 ˆ 75-80 Well drained JC
Arctotis HHA 21-35 60-70 Well drained JC
Ardisia GSh 90-180 75 Well drained 1/4"
Arenaria HP 15-30 55-65 Well drained S
Argemone HA 14 65-70 Well drained 1/8" Can be sown in situ
Arisaema HP 30-180 L ˆ 55-60 Well drained JC
Aristea GP 30-90 ˆ 55-60 Well drained JC
Aristolochia GSh 30-90 ˆ 75-85 Peaty S See No. 13. (Soak 48 hrs in hand hot water).
Armeria HP 14-21 60-70 Well drained JC See No. 13. (6-8 hours in hand hot water).
Arnica HP 25-30 55 Well drained JC Likes an acid sandy soil.
Artemisia HP 30-60 L 60-65 Well drained S
Arum HP 30-l80 ˆ 55-65 Peaty 1/8"
Aruncus HP 30-90 55-65 Peaty S
Asarina HHP 14-21 L 65-70 Well drained S
Asarum HP 7-30 60-65 Well drained 1/16" Sow as soon as possible.
Asclepias GP, HP 30-90 ˆ 50-75 Peaty 1/16" See No. 14. (Pre-chill for 3-4 weeks).
Asparagus GP 21-30 60-70 Peaty 1/4" Soak then chip. See Nos. 12 and 13.
Asperula HA 30-42 L 50 Well drained 1/16" Sow in situ or No. 14. (Pre-chill 2 wks).
Asphodeline HP 30 ˆ 70-75 Well drained JC
Aster HHA 10-14 65-70 Well drained 1/16" Pre-chill perennials 2 wks see No. 14.
Astilbe HP 40-80 65 Peaty S See No. 5.
Astrantia HP 30-180 L ˆ 55-65 Well drained S See No. 14. (Pre-chill for 4 weeks).
Atriplex HA 9-21 50-55 Well drained 1/16" Can be sown in situ
Atropa HP 21-30 50 Well drained 1/16"
Aubrieta HP 14-21 L 65-75 Well drained S See No. 5.
Baileya HHP 7-30 60-65 Well drained JC
Balsamorrhiza HP 14-42 60-65 Well drained 1/16"
Banana (Musa) GP 7-180 ˆ 70-80 Peaty 1/2² See No. 2.
Banksia HHSh 30-90 ˆ 65-70 Peaty S See No. 5.
Baptisia HP 7-10 70-75 Well drained 1/4" Soak then chip. See Nos. 13 and 12.
Basil HHA 7-10 60-70 Well drained 1/16" Can be sown situ
Bauhinia GSh 21-42 75-85 Peaty 1/4" See No. 13. (Soak 48 hours in hand hot water).
Beaufortia HHSh 14-60 L 55-65 Peaty S See No. 5.
Beaumontia GSh 7-30 70-75 Peaty 1/16"
Begonia HHP 15-60 L ˆ 70-80 Peaty S See No. 5. Fibrous 70-75°F, tuberous 65-70°F.
Belamcanda HP 14-60 ˆ 60-86 Well drained See No. 14. (Pre-chill for 7 days).
Bellis HB 10-15 L 70 Peaty 1/16" Reduce soil temperature at night.
Beloperone GP 30-180 L ˆ 70-75 Peaty S See No. 5.
Bergenia HP 30-180 ˆ 60-70 Peaty S See No. 14. (Pre-chill for 2 weeks).
Berlandiera HHP 30-90 L 60-70 Well drained S
Beta HB 14-21 55-65 Well drained 1/4" Usually sown in situ.
Bignonia GP 30-90 ˆ 60-70 Peaty S
Billadiera HHP 30-60 55 Sandy peat JC
Billbergia HHP 7-90 L 60-70 Peaty S See No. 5.
Biscutella HHA 14-21 55-65 Well drained JC Can be sown in situ.
Bixa GT 30-180 ˆ 75-80 Peaty
Blandfordia HHP 30-90+ ˆ 60-70 Sandy peat JC
Bletilla HHP 30-365 L ˆ 65-70 Peaty S See No. 5.
Boea GP 20-60 L ˆ 70-75 Peaty S See No. 5.
Boronia GSh 30-60 L 65-75 Peaty S See No. 5.
Brachycombe HHA 10-18 70 Well drained JC
Brimeura HBb 30-60 ˆ 60-65 Sandy peat JC
Bromeliads GP 7-90 L ˆ 60-70 Peaty S See No. 5.
Browellia GP 14-21 L 75 Peaty S See No. 5.
Brunfelsia GP 30-90 ˆ 70-80 Well drained JC
Bulbinella H/HHBb 30-90 ˆ 55 Well drained JC
Bupthalmum HP 14-30 L 70-75 Well drained S
Cacti GP 5-180 L ˆ 75-80 Peaty S See No. 9.
Caesalonia HhSh 14-120 ˆ 75-80 Well drained 1/4" See No. 13. (Soak 48 hours in hand hot water).
Calandrinia HHA 5-14 55-60 Well drained 1/8" Can be sown in situ
Calceolaria GB 14-21 L ˆ 65-75 Peaty S Outdoor varieties keep temp below 60°F.
Calendula HA 10-14 D 70 Any 1/4" Sow in situ, or autumn for winter greenhouse
Calibanus GP 30-120 L ˆ 70-80 Peaty S
Calliopsis HA 14 60-65 Well drained 1/8" Can be sown in situ
Callirhoe HP 30-180+ L ˆ 50 Well drained S Can be sown in situ or a cold frame.
Callistemon HHSh 14-60 L 55-65 Peaty S See No. 5.
Caltha HP 30-90 ˆ 55-60 Peaty 1/16" Keep compost slightly moist.
Camassia HBb 30-180 ˆ 55-60 Well drained 1/16"
Campanula HP, HB 14-28 L 60-70 Peaty S See No. 5.
Campsis HHSh 30-90 ˆ 70-75 Well drained S See No. 14. (Pre-chill for 2 months).
Canarina GP 30-180 ˆ 65-75 Well drained JC
Candytuft HA, HP 10-15 68-85 Well drained 1/4" Can sow in situ. Perennials (60-65°F) slow/irregular.
Canna HHP 21-60 ˆ 70-75 Peaty 1/4" See Nos 12 13, chip and soak for 48 hours.
Capsicum GA 21-30 L 70-75 Peaty S
Cardiocrinum HBb 90-730 ˆ 50 Peaty 1/16" See No. 6.
Cardiospermum HHA 21-30 65-70 Well drained 1/2"
Carica GSh 30-120 ˆ 75 Peaty 1/8" See No. 13. (Soak for 40 hours).
Carlina HP 30-60 L 55-60 Well drained S
Carthamus HA 12-18 55-65 Well drained 1/4" Can be sown in situ
Cassia GSh 7-90 70-75 Well drained 1/8" See No. 12.
Casuarina GT 30-90 65 Well drained JC
Catananche HP 21-25 65-75 Well drained 1/16"
Catharanthus GA/HHA 15-20 D 70-75 Peaty 1/8"
Celosia GA 10-15 L 70-75 Well drained JC Don't sow early - likes warmth.
Centaurea HP, HA 7-14 D 60-70 Well drained 1/16"
Centranthus HP 21-30 60-70 Well drained JC Can be sown in situ.
Cephalaria HP 21-60 55-65 Well drained 1/4" Can be sown in situ.
Cephalilitrum HHA 14-21 65-75 Well drained JC
Cerastium HP 5-10 60 Well drained 1/16"
Ceratotheca HHA 8-14 70-75 Well drained 1/8"
Cerinthe HHA 7-14 60-65 Well drained 1/16" Can be sown in situ
Cheiranthus HB 14-21 65-75 Well drained 1/8" Sow in reserve bed, prick out to 6", plant in Oct.
Chelidonium HP 30-365 ˆ 55-65 Well drained 1/8" See No. 16.
Chelone HP 14-42 55-65 Well drained 1/16" Needs good drainage.
Chiastophyllum HP 30-60 55 Well drained S Seeds very small.
Chionodoxa HBb 30-90 ˆ 55 Well drained 1/4"
Chlorogalum HBb 30-90 ˆ 55-80 Well drained 1/8" See No. 6.
Chrysanthemum HA, HP 10-18 60-70 Peaty 1/8" Sow annuals in situ. HPs reduce night temp
Cimicifuga HP 30-365 ˆ 55-60 Well drained 1/16"
Cineraria GP 14-21 L ˆ 70 Well drained JC
Cirrhopetalum GP 30-180 L ˆ 65-70 Well drained S
Cirsium HP 15-18 70-75 Well drained 1/8"
Cissus GSh 30-180 ˆ 70-75 Well drained JC
Cladanthus HA 30-35 70-75 Well drained JC
Clarkia HA 21 - Well drained 1/4" Best sown in situ, for sturdier plants.
Claytonia HA 14-21 65-70 Well drained 1/8"
Clematis HP 30-270+ ˆ 70-75 Well drained 1/8" See Nos. 6 16.
Cleome HHA 10+14 L 70-75 Well drained S See No. 14. (Pre-chill for 2 weeks).
Clerodendrum GSh 21-60 ˆ 70-75 Well drained 1/8"
Clianthus GSh 14-42 65-70 Well drained 1/16" See No. 13.
Clintonia HP 30-90 55-60 Sandy peat JC Keep compost always just moist.
Clitoria GP 15-20 70-75 Well drained 1/16" See Nos. 12 and 13. (Chip and soak 24 hrs).
Clivia GP 7-21 80-85 Peaty 1/4" Sow immediately. See No. 3.
Cobaea HHA 21-30 70-75 Well drained 1/16" Stick the seed vertically into the compost.
Coccoloba GSh 10-21 65-70 Well drained 1/4" See No. 13. (Soak for 24 hours).
Codonopsis HP 7-42 L 60-70 Slighty acid S
Coffea GSh 42-56 L 75 Peaty S See No. 2. (Soak for 48 hours).
Colchicum HBb 30-365 ˆ 55-65 Peaty 1/8" See No. 16.
Coleus HHP 10-20 L 65-75 Peaty S Indoors, warm with plenty of bright light.
Collinsia HHA 14-21 - Well drained 1/4" Best sown in situ, thin out to 6'.
Collomia HA 21 - Well drained 1/8" Best sown in situ, thin out to 6".
Columnea GP 30-120 L ˆ 72-75 Peaty S
Commelina HHP 30-37 70 Well drained 1/8"
Conophytum GP 10-40 L ˆ 75-80 Well drained S
Convallaria HP 60-365+ L ˆ 50-60 Well drained JC See No. 16.
Convolvulus HA 5-14 70-80 Well drained 1/8" Chip (12) or soak (13) the seeds.
Cordyline GP 30-90 75-80 Peaty 1/16" See No. 13. (Soak 10 mins in hand hot water).
Coreopsis HP 20-25 L 55-70 Well drained S Annuals can be sown In situ
Correa HHSh 30-90 ˆ 65-72 Well drained JC
Cortaderia HP 14-21 L 60-75 Peaty S See No. 5.
Corydalis HP 30-60 L 50-60 Well drained S
Cosmos HHA 5-10 68-86 Well drained 1/8" Can be sown in situ
Cotula HHA 14-42 50 Well drained 1/16"
Crambe HP 21-42 - Well drained 1/2" Best sown In situ.
Craspedia HHA 14-30 70-75 Peaty 1/8" Can be sown in situ.
Crepis HA 5-14 70-80 Wed drained JC
Crocosmia HP 30-90 55-60 Well drained 1/16"
Crocus HBb 30-180 ˆ 55-65 Well drained 1/8"
Crossandra GP 25-30 L ˆ 75-80 Peaty S See No. 5.
Crotalaria GSh 21-30 65-75 Well drained 1/16" See No. 13. (Soak for 2 hours)
Cryptostegia GCI 30-90 ˆ 65-75 Well drained 1/16" See No. 13. (Soak for 2 hours)
Cunonia GSh 30-60 70-75 Peaty 1/16"
Cuphea HHP 8-10 L 70 Peaty S
Cyananthus HP 14-60 L 60-65 Peaty S See No. 5.
Cycad GP 30-90 ˆ 70-75 Well drained Half bury the seed lengthwise.
Cyclamen GP 30-60 D ˆ 55-60 Peaty 1/4" Keep moist and in total darkness.
Cyclamen HP 30-18O D ˆ 55-60 Peaty 1/4" See No. 6.
Cynara HP 14-30 50-55 Well drained 1/8" Can be sown In situ.
Cynoglossum HA 5-10 D 65-75 Peaty 1/4"
Cyperus HHP 25-30 70-75 Peaty JC Keep the compost slightly moist.
Cyphomandra GP 20-25 70-75 Peaty 1/16"
Cyphostemma GP 30-60 ˆ 70 Well drained 1/4" See No. 13. (Soak for 2 hours).
Cypripedium HP 30-365 L ˆ 65-70 Peaty S See No. 5. Difficult outside the laboratory.
Cyrtanthus GP 30-90 ˆ 55-65 Peaty S Keep the compost slightly moist
Dahlia HHA 5-20 65-70 Peaty 1/16" Do not let the compost dry out.
Darlingtonia HP 30-90 ˆ 75-80 Peaty S Do not let the compost dry out. See No. 5.
Datura HHSH 21-42 55-65 Well drained 1/8"
Delonix GT 30-90 ˆ 75-85 Peaty 1/16" See No. 13. (Soak for 24 hours).
Delosperma HHP 10-40 L 75 Well drained S
Delphinium HP 14-28 D ˆ 50-55 Peaty 1/16" High temps cause dormancy. See No. 14 Pre-chill 2 wks.
Desmodium GA 30-90 75-80 well drained 1/16"
Dianella H/HHP 30-90 65-70 Well drained 1/16"
Dianthus HHA, HP 14-21 60-70 Well drained JC
Diascia HHA 14-30 60 Well drained JC
Dicentra HP 30-180 L ˆ 55-60 Well drained JC See No. 14. (Pre-chill for 6 weeks).
Dichorisandra GP 7-60 70-75 Peaty JC
Dictamnus HP 30-180 ˆ 55-60 Well drained See No. 14. (Pre-chill for 4-8 weeks).
Didymocarpus Gp 14-56 L ˆ 65-70 Well drained S
Dierama HP 30-180 L ˆ 60-65 Well drained S See No. 5.
Dietes HHP 30-90 ˆ 50-60 Well drained JC
Digitalis HP, HB 15-20 L 60-65 Peaty S Can be sown in situ.
Dimorphotheca HHA 10-15 L 60-70 Peaty JC
Dionaea GP 30-90 L ˆ 75-80 Peaty S See No. 5.
Dioon GP 30-90 ˆ 70-75 1/2 peat, 1/2 sand 1/4" See No. 2.
Dioscorea HP 21-36 70-75 Peaty 1/8"
Diplarrhena HP 30-90 55-65 Well drained JC
Diplolaena GSh 30-150 L ˆ 7-8O Peaty JC
Dipsacus HB 4-30 - Well drained 1/4" Best sown in situ
Disporum HP 30-180+ L ˆ 55-65 Well drained JC See No. 14. (Pre-chill for 6 weeks).
Dizygotheca HHSh 20-30 L 70 Peaty S
Dodecatheon HP 90-365 60-70 Well drained 1/16" See No. 6.
Dolichos HHA 14-30 70 Well drained 1/16" See No. 13.
Doronicum HP 15-20 L 70 Well drained S Reduce soil temperature at night
Doryanthes HHP 30-60 65 Peaty JC See No. 13. (Soak for 3 hours).
Draba HP 30-90 ˆ 55 Well drained JC See Nos. 6 and 14.
Dracaena GSh 30-180 L ˆ 75-85 Well drained S Keep the compost slightly moist
Dracunculus HP 30-180 ˆ 55-65 Peaty JC Keep the compost slightly moist
Drosera GP 30-90 L 55-65 Peaty S See No. 5.
Dryas HP 50-180 ˆ 60-70 Well drained JC See No. 6.
Duchesnia HP 30-90 L ˆ 55-65 Well drained JC
Duranta GSh 30-60 70-75 Peaty JC
Eccremocarpus HP 30-60 ˆ 55-60 Well drained JC Cover the seed slightly with silver sand
Echeveria HHP 21-90 L ˆ 55-65 Well drained JC
Echinacea HP 10-21 L 70-75 Peaty 1/8" Reduce soil temperature at night.
Echinops HP 15-60 65-75 Peaty 1/16"
Echium HA 7-14 70 Well drained 1/4" Can be sown in situ.
Edraianthus HP 30-60 L 55-65 Well drained 1/16"
Egg Plant GA 10-21 ˆ 70 Peaty 1/8" Keep the compost slightly moist
Emilia HHA 8-15 70 Well drained 1/16"
Epilobium HP 14-30 50-60 Well drained 1/8"
Episcia GP 25-40 L 70-80 Peaty S Seeds dust like. See also No. 5.
Eranthis HBb 30-365 ˆ 60-68 Well drained 1/16" See No. 6 and 14.
Eremurus HP 30-365 L ˆ 55-65 Well drained JC See No. 16
Erica GP 30-120 L ˆ 60-70 Acid Peat S See No. 5.
Erigeron HP 15-20 55 Well drained S
Erinus HP 20-25 65-75 Well drained S
Eriobotrya HHSh 30-180 ˆ 50 Well drained JC See No. 13. (Soak for 24 hours).
Eriophyllum HP 14-42 - Well drained 1/8" Best sown outdoors and transplanted.
Eryngium HP 5-90 L ˆ 65-75 Well drained S See No. 6.
Erysium HP 14-30 - Well drained 1/4" Sow in situ.
Erythrina HHSh 10-15 70-75 Peaty 1/8" See No. 13. (Soak for 24 hours).
Erythronium HBb 30-365 ˆ 50-60 Well drained 1/8" See No. 6.
Eschscholtzia HA 14-21 60-65 Well drained 1/4" Resents transplanting, best sown in situ.
Eucalyptus HHSh, HT 14-90 ˆ 70-75 Peaty S Sow seed/chaff together. See No. 14. Pre-chill 4 wks.
Eucnide HHA 21-30 60-70 Well drained 1/8"
Eucomis GBb 20-25 70-75 Peaty 1/16"
Eupatorium HP 30-90 ˆ 55 Well drained JC
Euphorbia HHA,HP,GSh10-15 ˆ 70-80 Well drained 1/4" Pre-chill HPs 7 days, soak 2 hrs. Lime-free compost.
Eustoma HHP 10-21 L 68-77 Well drained S
Exacum GA 15-20 L 70-75 Peaty S Seed dust like. See No. 5.
Fascicularia HHP 30-120 L ˆ 60-70 Peaty S See No. 5.
Fatsia HHSH 15-20 70-75 Peaty 1/4" Keep the compost slightly moist.
Faucaria GP 14-30 ˆ 60 Well drained JC Just cover with sharp sand.
Feijoa HHSH 21-42 55-60 Peaty 1/16" Rinse seeds 3 times before sowing.
Felicia Amelloides HHP 30 55-60 Well drained JC See No. 14. (Place in fridge for 3 weeks).
Felicia BergerianaHHA 30 70 Well drained JC
Ferns HP, GP 30-180 L 65 Peaty S See No. 4.
Ficus GSh 15-90 L ˆ 70-80 Peaty S See No. 5.
Filipendula HP 30-90 55-60 Well drained JC
Flower Lawn HP 30-180 L ˆ 55-65 Well drained S See Nos. 6 or 16.
F.Cabbage Kale HB 14-21 70-75 Peaty 1/8" Can be sown in situ
Foeniculum HP 10-14 D 65 Well drained 1/8" Dislikes transplanting, sow in situ.
Francoa HHP 14-30 L ˆ 50-55 Peaty S See No. 6.
Freesia HHBB 25-30 ˆ 65-75 Peaty 1/4" See No. 7.
Fritillaria HBb 330-540 ˆ 55-M Peaty 1/16" See No. 6.
Fuchsia GP 21-90 L ˆ 70-75 Peaty S See No. 5. Soak in rainwater 3-4 days. Keep moist.
Gaillardia HP, HHA 15-20 L ˆ 70-75 Peaty S Reduce soil temperature at night.
Galega HP 14-60 - Well drained 1/4" Best sown outdoors and transplanted.
Galtonia HBb 15-20 ˆ 70 Peaty 1/16"
Gardenia GSh 25-30 70-75 Peaty 1/8" Use a lime free compost (Ericaceous).
Gaura HHA 14-30 65-75 Well drained 1/16"
Gazania HHA 8-21 D 60-65 Well drained 1/8"
Gentiana HP 14-180 D ˆ 70-75 Lime free JC See No. 14. (Pre-chill for 2 months).
Gentianopsis HA 21-30 L - Well drained S Sow outdoors and thin. Sensitive to root disturbance.
Geranium HHP 3-21 ˆ 70-75 Well drained JC
Geranium HP 30-90 ˆ 50 Well drained JC See No. 6.
Gerbera GP 15-25 L 70-75 Peaty JC Sow sharp end down, don't cover completely.
Gesneria GP 14-21 L 70-75 Peaty S See No. 5.
Geum HP 21-28+ ˆ 65-70 Peaty 1/16" Reduce soil temperature at night.
Gilia HA 17 - Well drained 1/8" Sow outdoors and thin out.
Glaucidium HP 30-90 ˆ 50-55 Peaty JC
Glaucium HA 14-21 D 60-65 Well drained JC Transplant carefully, best sown In situ.
Globularia HP 10-30 L 55 Well drained S See No. 14. (Pre-chill for 3 weeks).
Gloriosa HHBb 30 70-75 Peaty 1/16"
Gloxinia GP 15-30 L ˆ 65-75 Peaty S See No. 5.
Gnaphalium HP 14-21 L 60-70 Well drained S
Godetia HA 7-14 60-65 Well drained 1/4" Can be sown in situ
Gomphrena HHA 6-8 L 70-75 Well drained JC
Gourds HHA 15-29 80 Peaty 1/4" Can also treat as No. 5.
Grass Tree HHP 30-180 L ˆ 65 Peaty S See No. 4.
Grasses HP, HHA 10-90 L ˆ 60-75 Peaty S
Grevillea HHSh 20-25 L 75-80 Well drained S See No. 13. (Soak for 24 hours).
Gunnera HP 14-60 ˆ 70-80 Peaty 1/16"
Guzmania GP 7-90 L ˆ 60-70 Peaty S See No. 5.
Gypsophila hA, HP 10-15 ˆ 70 Peaty JC
Hacquetia HP 30-180 ˆ 55 Well drained JC See No. 16.
Haemanthus GBb 7-42 60-65 Peaty JC
Haplopappus HP 21-30 60-70 Well drained 1/8"
Hardenbergia HHP 30-90 ˆ 55-65 Well drained 1/8" See No. 13. (Soak for 24 hours).
Harpephyllum GP 10-30 70-75 Peaty 1/4" See No. 13. (Soak for 24 hours).
Haworthia HHP 21-60 L 60-65 Well drained JC
Hedychium HHP 20-25 70-75 Peaty 1/16" See No. 13. (Soak for 2 hours).
Hedysarum HP 14-42 55-65 Well drained 1/16"
Helenium HP 7-10 70 Peaty 1/16" Can be sown in situ. Reduce soil temp at night.
Helianthemum HP 15-20 70-75 Well drained S See No. 5.
Helianthus HA 10-14 70-85 Peaty 1/4" Can be sown in situ.
Helichrysum HHA 7-10 L 65-75 Well drained S
Heliophila HHA 14-21 60-65 Well drained 1/16"
Heliopsis HP 10-15 70 Well drained 1/16"
Heliotropium HHP 14-42 ˆ 65-75 Well drained 1/16"
Helipterum HA 14-20 65-75 Peaty 1/16" Can be sown in situ
Helleborous HP 30-545 ˆ 60-65 Well drained See No. 6. May need 2 winters outdoors to germ
Hemerocallis HP 21-49 60-70 Well drained 1/8" See No. 14. (Pre-chill for 6 weeks).
Hemiphora GP 30-120 ˆ 70-75 Peaty JC
Hepatica HP 30-360 L 50-55 Well drained JC See No. 14. (Pre-chill for 3 weeks).
Heracleum HP 30-90 - Well drained 1/4" Sow in situ. See No. 6.
Herniaria HP 10-12 70 Well drained JC
Hesperis HB 20-25 L 70-85 Peaty S Can be sown in situ. Reduce soil temp at night.
Heuchera HP 10-60 L ˆ 65-70 Well drained S
Hibiscus HHP, GA 15-30 ˆ 75-80 Peaty 1/16" Chip and soak. See Nos. 12 13.
Hieracium HP 21-30 50-60 Well drained JC
Hippeastrum HHBB 30-42 75 Pemy 1/8"
Hollyhock HA, HP 10-12 L 60-70 Peaty S Can be sown in situ.
Holmskioldia GSh 30-90 ˆ 60-65 Well drained JC
Hosta HP 30-90 ˆ 50 Peaty 1/16" Keep compost slightly moist.
Humulus HP 25-30 70-75 Well drained 1/4" Can be sown in situ.
Hunnemannia HHA 15-20 70-75 Well drained 1/16" Can be sown in situ. Makes a nice pot plant.
Hutchutinsia HP 14-30 - Well drained 1/4" Sow in situ.
Hyoscymus HB, HA 14-42 - Well drained 1/8" Sow in situ.
Hypericum HSh 30-90 ˆ 50-55 Well drained JC
Hypoestes GP 10-21 70-75 Well drained JC
Hyssopus HP 14-42 60-70 Peaty 1/16"
Iliamna HP 30-360 L ˆ 55-65 Well drained 1/16" See No. 14. (Pre-chill for 3 weeks).
Impatiens HHA 21-30 L ˆ 70-75 Peaty S See No. 5. Keep humidity high until germination.
Incarvillea HP 25-30 55-65 Well drained S See No. 5.
Indigofera HHSh 30-90 ˆ 50 Well drained 1/8 See No. 13. (Soak for 24 hours).
Inula HP 14-42 55-65 Well drained 1/16" Can be sown in situ
Ionopsidium HA 14-21 55-60 Well drained 1/16" Sow in situ.
Ipomaea HHA 5-21 ˆ 70-85 Peaty 1/4" Chip and soak. See Nos. 12 and 13.
Iris HP 30-545 ˆ 60-70 Peaty 1/4" See No. 6. May take two winters outdoors.
Isatis HB 14-42 50 Well drained 1/16" Sow in situ.
Ixiolirion HBb 30-90 ˆ 50 Well drained 1/16"
Ixora GSh 30-120 ˆ 70-75 Well drained 1/16" See No. 14. (Pre-chill for 3 weeks).
Jacaranda GSh 10-15 70-85 Peaty JC
Jacobaea HA 8-21 60-65 Well drained 1/8"
Jacobinia GP 30-180 ˆ 75-80 Peaty 1/8" See No. 13. soak for 24 hours).
Jasione HP 10-21 70 Well drained JC
Jatropha GP 30-120 ˆ 65-75 Well drained 1/16"
Jovellana H/HHSh 30-90 ˆ 60-50 Well drained S
Kalanchoe GP 7-30 L ˆ 65-75 Weil drained S Likes good air circulation.
Kallstroemia HHA 14-21 ˆ 60-65 Well drained JC
Kaulfussia HA 21-30 - Well drained 1/4" Best sown in situ. Thin to 6".
Kentranthus HP 21-40 65-70 Well drained JC
Kirengeshoma HP 30-300 55-65 Peaty JC Keep compost uniformly moist.
Knautia HP 10-21 - Well drained 1/4" Best sown in situ Thin to 6".
Kniphofia HP 10-30 70-75 Peaty 1/4" Reduce soil temperature at night
Kochia HHA 10-15 L 70-75 Well drained S
Lagerstroemia HHSh 15-20 L 70 Well drained S See No. 5.
Lagunaria GT 30-180 ˆ 68-70 Peaty 1/8" See No. 13. (Soak for 2 hours).
Lamium HP 30-60 65-70 Well drained JC
Lampranthus HHP 15-30 D 65-75 Well drained JC
Lantana HHP 42-60 ˆ 70-75 Peaty 1/8" See No. 13. (Soak 1 day in hand hot water).
Lapageria HHP 30-90 ˆ 70-75 Peaty 1/8" See No. 13. (Soak 3 days, change water 3-5 times/day)
Lapeirousia HBb 30-90 ˆ 55-60 Well drained 1/8"
Larkspur HA 14-21 D 50-55 Peaty 1/16" See No. 14. Pre-chill 2 wks. High temps cause dormancy
Lasthenia HA 17-21 - Well drained 1/8" Best sown in situ Thin to 4".
Lathyrus HP 20-30 ˆ 55-65 Peaty 1/4" Soak or chip the seeds. See Nos. 12 or 13.
Lavatera HA, HB, HP15-20 70 Peaty 1/16"
Lavender HSh 21-90 ˆ 55-65 Well drained JC See No. 14. (Pre-chill for 4-6 weeks).
Lawrencellida HHA 21-30 L 65-75 Well drained S
Layia HA 8-30 70-75 Well drained 1/8"
Leea GP 30-90 ˆ 75-80 Well drained 1/8" See No. 13.
Leontopodium HP 10-42 L ˆ 50 Well drained S See No. 14. (Pre-chill for 3 weeks).
Leptosiphon HA 17-21 55-65 Well drained 1/16" Best sown in situ.
Leptospermum HHSh 30-180 ˆ 60 Peaty 1/16"
Leptosyne HA 6-12 L 60-65 Peaty 1/8"
Leschenaultia GSh 30-120 ˆ 60-70 Well drained JC
Lewisia HP 365+ L ˆ 50 Well drained S See No. 14. (Pre-chill for 5 weeks).
Liatris HP 20-25 55-75 Well drained JC Reduce soil temperature at night.
Libertia HP 30-180 ˆ 50 Well drained 1/8" See No. 6.
Ligularia HP 14-42 ˆ 55-65 Peaty S Keep compost slightly moist.
Lilies HBb 30-365 ˆ 65-75 Peaty JC See No. 10 for more details.
Limnanthes HA 14-21 60 Well drained 1/16" Can be sown in situ
Limonium HP, HHA 10-20 D 65-70 Well drained JC Suworowii needs total darkness to germinate.
Linanthus HA 17-21 - Well drained 1/8" Sow outdoors and thin out.
Linaria HP 10-15 55-60 Well drained JC See No. 14. (Pre-chill for 3 weeks).
Linum HP 20-25 65 Well drained 1/8" Best sown in situ.
Lisianthus HHP 10-21 L 68-77 Well drained S
Lithops GP 10-40 L ˆ 75-80 Well drained S
Lobelia HHA,HHP 15-20 L ˆ 65-75 Well drained S Perennial seeds in frig 3 mos (See No. 14).
Lomatia HHSh 30-180 ˆ 60-65 Well drained 1/8"
Lonas HA 5-7 D 70 Well drained JC Can be sown in situ
Lotus HHP 14-30 ˆ 55-65 Well drained JC Transplant into 3" pots.
Luculia HHSH 30-60 ˆ 55-60 Well drained JC
Lunaria HB 10-14 70 Well drained 1/8" Can be sown in situ
Lupin HP 15-60 D ˆ 55-65 Well drained 1/8" Soak or chip the seeds. See Nos. 12 or 13.
Lychnis HP 21-30 L 70 Well drained S See No. 12. (pre-chill for 2 weeks).
Lysichitum HP 30-60 ˆ 55-65 Peaty 1/4" Keep compost saturated by standing in water.
Lysimachia HP 30-90 ˆ 55-65 Peaty S Keep compost moist.
Lythrum HP 15-30 65-70 Peaty JC
Macropidia GP 30-90 L 60-65 Peaty S See No. 5.
Malope HA 14-30 65-75 Peaty JC See No. 14. (Pre-chill for 3 weeks).
Malva HP 5-21 70 Peaty 1/16"
Mandeville HHSh 14-30 65-75 Well drained JC Sow in 1/2 sand and 1/2 peat.
Mandragora HP 50-60 55-60 Peaty 1/8"
Marigold HHA 5-14 70-75 Peaty JC
Matricaria HP 5-21 L 65-75 Well drained S Reduce soil temperature at night.
Maurandia HHP 14-21 65-70 Well drained 1/16"
Meconopsis HP 14-28 ˆ 55-65 Peaty S Keep slightly moist. See also No. 5.
Melia GT 30-180 ˆ 55 Well drained 1/8"
Melianthus HHSh 30-180 ˆ 70-75 Peaty 1/16"
Mentzelia HA 5-21 55-60 Well drained JC
Mertensia HP 30-60 ˆ 55-60 Well drained 1/16" See No. 14. (Pre-chill for 3 weeks).
MesembryanthemumHHA 15-20 D 65-75 Well drained S
Metrosideros HHSh 30-90 ˆ 60-60 Peaty 1/16"
Mimosa GP 21-30 L ˆ 70-75 Well drained S See No. 13. Soak 20 mins almost boiling water.
Mimulus HHP, HP 7-21 L 70-75 Peaty S See No. 14. (Pre-chill 3 weeks). Then No. 5.
Mina HHP 20-25 70 Well drained 1/4" Chip and soak. See Nos. 12 and 13.
Mirabilis HHA 7-21 L 70 Well drained S
Moluccelia 21-35 L ˆ 60 Well drained JC Pre-chill 5 days then 40°F temp. nights
Momordica HHA 14-21 65-75 Peaty 1/8" Sow seeds singly in 3' pots.
Monarda HP 10-40 60-70 Peaty JC Reduce soil temperature at night.
Moraea HHBb 30-90 ˆ 55-60 Well drained 1/8"
Morina HP 14-42 50 Peaty 1/16"
Mucuna GP 21-90 65-75 Peaty 1/4"
Muscari HBb 42-60 60-65 Well drained 1/16"
Mutisia H/HHSh 30-90 ˆ 70 Well drained 1/16"
Myosotidium H/HHP 30-180 ˆ 65-70 Peaty 1/16"
Myosotis HB 14-30 D 65-70 Peaty S See No. 5 but keep in total darkness.
Myrrhis HP 14-42 55-65 Well drained 1/8" Can be sown in situ
Naranjilla GP 10-30 ˆ 70-80 Peaty 1/16"
Nasturtium HA 7-12 65 Well drained 1/4" Best sown in situ
Nemesia HHA 7-21 55-70 Peaty S See No. 5.
Nemophila HA 7-21 55 Well drained 1/16" Can be sown in situ.
Neperrthes GP 30-90 ˆ 75-85 Peaty S Don't let compost dry out. See No. 5.
Nepeta HP 7-21 60-70 Well drained JC Can be sown in situ.
Nerine HHBb 14-21 65-70 Well drained S Sow immediately, keep moist, cover with plastic.
Nerium GSh 30-90 L ˆ 65-75 Peaty S
Nertera GP 30-90 D ˆ 65-70 Well drained SC See No. 8.
Nicandra HA 15-20 70-75 Well drained JC
Nicotiana HHA 10-20 L 70-75 Well drained S
Nierembergia HHP 15-30 ˆ 70-75 Well drained JC
Nigella HA 10-15 65-70 Well drained 1/16" Best sown in situ. Resents transplanting.
Nolana HHA 14-30 60-70 Well drained 1/16" Can be sown in situ.
Nomocharis HBb 30-180 L ˆ 45-50 Well drained JC See No. 16
Notholirion H/HHBb 30-180 L ˆ 45-50 Well drained JC See No .16
Ocimum HA 14-42 L 55-60 Well drained S
Oenothera HP 15-30 L 65-70 Well drained JC Reduce soil temperature at night.
Omphalodes HP 14-42 65-75 Well drained 1/8"
Onopordon HP,HB 30-60 55-60 Well drained 1/4" Can be sown in situ.
Onosma HP 30-60 50 Well drained 1/16"
Orchid GP 90-365 L ˆ 65-75 Well drained S
Orchis HBb 90-365 L ˆ 65-75 Well drained S
Ornithogalum GBb 30-180 ˆ 55-60 Peaty 1/16" See No. 6
Orphium GSh 21-42 L 65-70 Well drained S
Osteospermum HHA,HP 10-15 L 60-65 Well drained JC
Oxalis HBb 14-60 55-68 Well drained JC
Pachypodium GP 30-180 L ˆ 65-75 Well drained S
Paeonia HP 365+ L ˆ 50-60 Well drained JC See No. 16. Keep shaded and moist.
Palms GP 60-180 ˆ 75-80 Peaty 1/4" See No. 2
Pansy HP 14-21 D ˆ 65-75 Well drained 1/16" See No. 14. (Pre-Chill for 2 Weeks.)
Papaver HP 10-30 D 55 Well drained S Best sown in situ - P.Orientale needs light to germ.
Paradisea HP 30-180 ˆ 50 Well drained 1/16" See No. 6
Parnassia HP 30-180 ˆ 55-65 Peaty S Keep water in saucer to keep soil moist.
Parochetus HP 30-90 ˆ 50 Well drained 1/16" See No. 13.
Passiflora HHP 30-365 ˆ 70-85 Peaty 1/4" See No. 13. Soak seed container occasionally.
Pavonia GSh 30-60 ˆ 75 Peaty 1/16"
Peanuts GA 7-21 70-75 Peaty 1/4" Sow and cover with plastic until germination.
Peltiphyllum HP 30-90 L ˆ 55-60 Peaty S Keep water in saucer to keep soil moist.
Penstemon HP 18-21 L 55-60 Well drained JC See No. 14
Pentas GP 25-40 70-75 Peaty S See No. 5
Peperomia GP 15-30 70-75 Peaty S See No. 5
Perilla HHA 15-30 L 65-75 Peaty S
Petrea GSh 30-60 L 65-75 Peaty S
Petunia HHA 10-21 L 70-75 Peaty S F1 hybrids and doubles may need 80°F to germinate.
Phacelia HA 12-30 D 55-65 Well drained 1/4" Best sown in situ. Total dark required.
Phaeomeria GP 30-90 ˆ 80 Well drained 1/8"
Phaseolus GP 30-60 65-70 Well drained 1/16" Chip and soak. See Nos. 12 and 13.
Philodendron GP 30-120 ˆ 75-80 Peaty 1/16"
Phlomis HP 14-42 60 Well drained JC
Phlox-Annual HHA 10-21 D 55-65 Peaty 1/16" Sow direct into pots, resents transplanting.
Phlox-PerennialHP 25-30 D ˆ 70 Peaty 1/16" See No. 14. (Pre-chill for 4 weeks).
Phormium HP 30-180 ˆ 60-65 Peaty JC
Phuopsis HP 30-40 L 50-60 Well drained S
Phygelius HP 10-14 70-75 Well drained JC
Physalis HP 21-30 L 70 Well drained S
Physostegia HP 21-30 55-75 Peaty JC Reduce soil temperature at night.
Phyteuma HP 30-90 ˆ 55-65 Well drained JC See No. 6
Phytolacca HP 30-60 ˆ 65-70 Well drained 1/8"
Pilea GP 14-60 L ˆ 65-75 Peaty S See No. 5.
Pinguicula HHP 30-120 L ˆ 55 Peaty S See No. 5. Use a compost 1/2 peat and 1/2 sand.
Pittosporum HHSh 30-60 55 Well drained 1/16" Put seeds in bag, dip in boiling water few secs.
Platycodon HP 15-30 L 70 Well drained S
Platystemon HA 14-30 55-65 Well drained 1/16 Sow in situ
Plumbago GP 25-30 70 Well drained JC
Plumeria GP 30-180 ˆ 65-75 Peaty 1/16" See No. 13.
Podolepis HHA 21-30 L 65-70 Well drained S
Podophyllum HP 30-180 L ˆ 55-60 Peaty JC Pre-chill for 3 wks. Keep always moist.
Polemonium HP 20-25 70 Peaty 1/16" Reduce soil temperature at night.
Polygala HSh 30-60 L 60-65 Well drained JC
Polygonatum HP 30-545 ˆ 50 Well drained 1/16" See No. 6.
Polygonum HP,HHA 21-60 ˆ 70-75 Peaty 1/16" Do not overwater
Portulaca HHA 14-21 L 70-85 Well drained S
Potentilla HP 14-30 65-70 Well drained JC
Poterium HP 30-60 ˆ 50 Well drained JC See No. 6.
Primula-IndoorsGA, GP 20-25 L ˆ 55-60 Peaty S P.Sinensis needs darkness for germination.
Primula-OutdoorHP 21-40 L ˆ 60-65 Peaty S See No. 14. (Pre-chill for 3 weeks).
Proboscidia GA/HHA 15-42 ˆ 70-75 Peaty 1/4"
Protea HHT 30-90 ˆ 65-75 Peaty 1/4" Sow immediately.
Prunella HP 30-60 55-65 Well drained 1/16"
Psidium 30-60 ˆ 70-75 Peaty JC See No. 13.
Pulmonaria HP 30-42 60-65 Peaty JC
Pulsatilla HP 30-180 ˆ 60-70 Well drained JC See No. 6. Remove 'tails' before sowing
Pyrethum HHA, HP 30-60 ˆ 55 Well drained JC Doubleness of flowers increases in 2nd yr.
Pyrola HSh 30-90 L ˆ 55 Peaty S
Ramonda HP 30-60 L ˆ 55-60 Well drained S
Ranunculus HP 30-90 ˆ 50 Well drained 1/16" See No. 6.
Raoulia HP 30-90 L ˆ 55-60 Well drained S
Ratibida HA/HB/HP 21-42 68-75 Well drained 1/8" Reduce soil temperature at night.
Rechsteineria GBb 30-60 70 Well drained JC
Rehmannia H/HHP 21-42 L 60-65 Well drained JC
Reseda HB,HA 5-21 L 70 Well drained S Extra care required when transplanting.
Rheum HP 21-42 60-65 Peaty 1/8"
Rhodanthe HHA 14-30 75-80 Well drained JC Can be sown in situ
Rhodochiton HHP 12-42 ˆ 60-65 Peaty JC
Rhodohypoxis HP 30-90 ˆ 50 Well drained JC Lime free compost required.
Rhoeo GP 14-60 65-70 Peaty JC See No. 13. (Soak for 1/2 hour).
Ricinus HHA 15-21 70-75 Peaty 1/4" These seeds are poisonous.
Rochea HHP 14-42 L 60-70 PBM S See No. 5.
Rodgersia HP 12-60 L 55-60 Peaty S
Roscoea HP 30-365 L ˆ 50-55 Well drained S See No. 16.
Rothmannia HHSh 30-90 ˆ 70-75 Peaty 1/8" See No. 13. (Soak for 5 hours).
Rudbeckia HHA, HP 5-21 L 70 Peaty S Fulgida See No. 14. (Pre-chill for 2 weeks).
Ruella HP 30-60 ˆ 65-75 Peaty JC
Ruta HP 30-42 60-65 Well drained JC
Sagina HP 10-21 55 Well drained JC
Saintpaulia GP 30-60 L ˆ 70-75 Peaty S See No. 5.
Salpiglossis HHA 15-30 D ˆ 70-75 Peaty S
Salvia HHA, HA 10-14 L ˆ 68-80 Well drained S For Patens Superba See No. 14. Pre-chill 3 wks.
Sandersonia HHBb 30-90 ˆ 75 Well drained 1/8" See No. 13.
Sanguinaria HP 30-90 ˆ 50-55 Well drained 1/16"
Sanguisorba HP 30-60 50-55 Well drained S
Sanvitalia HA 10-21 L 70 Well drained S Take care when transplanting.
Saponaria HA,HP 10-21 L 70 Well drained S See No. 14. (Pre-chill for 3 weeks).
Sarracenia HP 30-90 L ˆ 75-80 Peaty S See No. 14. (Pre-chill 7 days) then No. 5.
Saxifraga HP 15-60 ˆ 65-75 Well drained JC See No. 6.
Scabiosa HA 10-15 ˆ 70-75 Well drained 1/16"
Schefflera GSh 20-30 75 Peaty 1/16"
Schizanthus GA 7-14 D 60-75 Peaty S
Schizopetalon HHA 6-21 60-65 Well drained 1/16"
Schizostylis HBb 30-90 ˆ 55-60 Well drained 1/16"
Scilla HP 30-180 ˆ 50 Peaty 1/16" See No. 6.
Scutellaria HP 14-180 ˆ 50 Well drained JC
Sedum HP 15-30 ˆ 50 Well drained S See No. 6.
Sempervivum HP 15-30 ˆ 70 Well drained S
Senecio HHA 10-21 L 65-75 Well drained 1/16"
Setcreasia HHP 30-40 70 Peaty JC
Shortia HP 30-60 ˆ 60-65 Peaty S See No. 14. (Pre-chill for 3 weeks).
Sidalcea HP 14-42 50 Well drained 1/8"
Silene HP 15-20 70 Well drained JC Can be sown in situ.
Silybum HA 14-21 55-60 Well drained 1/8" Can be sown in situ.
Simmondsia HHT 14-21 65-70 Well drained JC See No. 13. (Soak for 12 hours).
Sinningia GP 10-21 L 70 Peaty S
Sisyrinchium HP 30-180 ˆ 50 Well drained 1/8" See No. 6.
Smilacena HP 30-180 L ˆ 60-65 Peaty JC See No. 14. (Pre-chill for 3 weeks).
Smithiantha GP 15-40 L 75-77 Peaty S Very small seeds
Solanum GP 15-21 L 70-80 Well drained S Place outdoors in summer for pollination.
Soldanella HP 30-180 L ˆ 55-60 Well drained JC See No. 14. (Pre-chill for 4 weeks).
Solidago HP 14-42 50 Well drained JC
Sparaxis HBb 30-90 ˆ 50-55 Well drained 1/16"
Sparmannia GSh 21-30 65-75 Peaty JC
Specularia HA 12-30 - Well drained 1/16" Sow outdoors and thin out.
Spigelia H/HHP 30-60 L 65-70 Well drained JC See No. 14. (Pre-chill for 3 weeks).
Stachys HP 15-30 L 70 Well drained JC Reduce soil temp at night. Grow on the dry side.
Stapelia GP 7-30 L ˆ 65-70 Peaty S Use 1/2 peat 1/2 sand.
Stenocarpus HHT 30-90 ˆ 65-75 Well drained JC
Stephanotis GP 15-90 ˆ 75-80 Peaty 1/16" Keep the compost slightly moist.
Stereospermum GSh 30-18O ˆ 65-75 Well drained JC
Stocks HHA 10-14 L 55-60 Well drained S Can be sown in situ.
Stokesia HP 25-30 70 Peaty 1/16"
Strelitzia GP 30-180 ˆ 70-75 Sand S See No. 1. Soak up to 3 days, change water daily.
Streptocarpus GP 15-30 L 55-65 Peaty S Very small seeds. See No. 5.
Streptosolon HHSh 30-90 ˆ 55-65 Well drained 1/16"
Stylomecon HA 14-21 - Well drained 1/16" Sow outdoors and thin out to 6".
Succisa HP 10-21 ˆ 65-70 Well drained JC
Sutherlandia H/HHSh 21-30 60-65 Well drained 1/16" See No. 13. (Soak for 3 hours).
Sweet Pea HA 10-20 D 55-65 Peaty 1/4² File or soak seeds. See Nos. 12 and 13. Grow cool.
Symphyandra HP 21-30 L 60-65 Well drained JC
Tacca GP 30-270 ˆ 80-85 Peaty 1/8" Soak for 72 hours. See No. 13.
Tacitus HHP 30-90 L ˆ 50-60 Well drained S
Tecophilaea HBb 30-365 ˆ 50-55 Peaty 1/16" Keep compost slightly moist.
Tellima HP 30-90 ˆ 55-60 Well drained S See No. 6.
Tephrosia HP 21-42 65-70 Well drained JC Chip and soak. See Nos. 12 and 13.
Tetranema GP 14-30 65-75 Peaty JC
Teucrium HP 25-30 70 Well drained S
Thalictrum HP 15-21 ˆ 50-60 Well drained 1/8"
Thermopsis HP 15-30 70 Well drained 1/16" File or soak the seeds. See Nos. 12 and 13.
Thunbergia HHA 14-21 ˆ 70-75 Peaty JC Keep the compost slightly moist.
Thymus HP 15-30 L 55 Peaty S See No. 5.
Tiarella HP 14-90 ˆ 50 Well drained S See No. 6.
Tibouchina GSh 30-90 L ˆ 60-70 Peaty S See No. 5.
Tigridia H/HHBb 30-90 55-60 Well drained 1/16"
Tillandsia GP 30-90 L ˆ 60-70 Peaty S See No. 5.
Tithonia HHA 5-14 L ˆ 70- Well drained S
Torenia GA 15-30 L 70-75 Peaty S See No. 5.
Townsendia HP 30-90 ˆ 60 Well drained 1/16" See No. 6.
Trachelium HHP 15-21 L 55-60 Well drained S
Trachymene HHA 15-30 D 70 Well drained 1/16" Transplant carefully.
Tradescantia HP 30-40 70 Peaty JC Reduce soil temperature at night.
Tree Fems HHP 30-120 L ˆ 65-70 Peaty S See No. 4.
Trichosanthes HHA 14-30 65-75 Peaty 1" Sow singly in 2' pots.
Tricyrtis HP 30-90 ˆ 65-70 Well drained 1/8" Keep compost slighty moist.
Trillium HP 545+ ˆ 60-70 Well drained S See No. 15. Needs 2 periods 3+ mos in frig
Tripteris HA 5-14 60-65 Well drained 1/8" Can be sown in situ.
Trollius HP 30-365 ˆ 50 Well drained S See No. 14. (Pre-chill for 2 weeks).
Trop. SpeciosumHP 360-720 ˆ 55-60 Well drained JC
Tropaeolum HA 10-15 55-65 Peaty 1/4" Can be sown in situ
Tulipa HBb 60-90 ˆ 50 Well drained 1/8" See No. 6.
Tunica HP 14-60 ˆ 50 Well drained 1/16 See No. 6.
Tweedia GP 30-90 ˆ 75 Well drained JC
Urospermum HP/HB 16-30 L 60-65 Well drained JC
Ursinia HHA 14-30 55-60 Well drained JC
Uvularia HP 30-180 ˆ 55-60 Peaty JC
Vallota HHBb 30-60 65-70 Peaty 1/16"
Veltheimia HHBb 30-90 ˆ 55-65 Peaty 1/16" Keep compost slightly moist
Venidium HHA 6-14 60-65 Peaty 1/8"
Veratrum HP 90-365 ˆ 55-60 Well drained 1/4² See No. 6 and No. 16.
Verbascum HB,HP 14-30 55-60 Well drained 1/16" Can be grown in situ
Verbena HHA,HP 14-90 D ˆ 65 Well drained 1/16" Bonariensis Venosa. See No. 14. Pre-chill 2 wks.
Verbesina HHA 14-30 60-65 Well drained 1/8"
Veronica HP 15-30 L 70 Peaty JC Reduce soil temperature at night.
Veronicastrum HP 21-40 L 55-60 Well drained JC
Vicia HP 21-40 65-70 Well drained JC
Vinca GA 15-30 D ˆ 70-75 Peaty 1/16"
Viola HP 14-21 D ˆ 65-75 Well drained 1/16" See No. 14. (Pre-chill for 2 weeks).
Viscaria HA 10-21 60-65 Well drained JC
Vriesia GP 7-90 L ˆ 60.7 Peaty S See No. 5.
Wahlenbergia HHA 14-28 L 60-70 Well drained S
Wallflower HB 10-14 65-70 Well drained 1/4" Sow in reserve bed, prick out to 6", plant in Oct.
Waterlily GP 14-30 File seed, soak 75-85'F, change water 2x daily.
Watsonia HBb 30-180 ˆ 55-65 Well drained 1/8" Keep the compost slimy moist.
Xeranthemum HA 10-15 70 Well drained JC Transplant carefully.
Xerophyllum HP 30-60 ˆ 55-60 Peaty JC
Yucca HA 30-365 ˆ 65-75 Well drained JC Filamentosa germinates at 55°F.
Zantedeschia HHP 30-90 L ˆ 70-80 Peaty S See No. 13. Keep compost quite moist.
Zauschneria H/HHP 30-60 L 60-65 Well drained JC
Zea HHA 5-14 70 Peaty 1/4" Sow seeds individually in peat pots.
Zinnia HHA 10-24 75-80 Peaty 1/16" Sow seeds individually in peat pots.
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Variety Type Germ Days Irr Temp Media Sow Depth Comments - Links
Abies HT 21-30 L ˆ 68-75 Peaty S Soak overnight then pre-chill 21 days. (No. 14).
Acer HT 30-365+ L ˆ 65-70 Peaty S Soak 2 days, No. 15, 2 mos warm moist, 2 mos fridge
Ailanthus HT 30-90 L ˆ 50-60 Well drained S Chip, soak then No. 14 for 2 weeks.
Akebia HSh 30-180 L ˆ 50-60 Peaty S See No. 14. (4 weeks).
Albiza HSh/HT 30-90 ˆ 65-75 Well drained 1/8" Soak for 12 hours in tepid water before sowing.
Amorpha HSh 30-120 ˆ 50-60 Well drained 1/16" Soak for 12 hours in tepid water before sowing.
Andromeda HSh 30-60 L ˆ 50-60 Peaty S Keep soil moist - stand in saucer of water.
Araucaria HT 30-60 D 55-60 Peaty 1/4" Sow immediately
Arbutus HT 60-90 L ˆ 65-70 Peaty S See No. 14. (6-8 weeks).
Arundinaria HSh 30-90 L ˆ 70 Peaty JC Keep soil moist - stand in saucer of water.
Asterolasia HSh 30-180 ˆ 55-65 Well drained 1/16"
Aucuba HSh 30-90 ˆ 65-70 Well drained 1/8"
Azalea HSh 50-90 L ˆ 55-60 Peaty S See No. 5 or No. 6. Keep shaded from direct sun.
Berberis HSh 60-180 L ˆ 50-65 Well drained S See No. 14. (8 weeks).
Betula HT 30-90 L ˆ 65-75 Peaty S See No. 14. (10 weeks).
Buddleia HSh 20-30 L 70-75 Peaty S See No. 14. (Pre-chill for 4 weeks).
Bupleurum HSh 14-60 55-60 Well drained JC
Calluna HSh 30-60 L ˆ 65-70 Peaty S See No. 14. (Pre-chill for 4 weeks).
Calocedrus HT 30-90 L 50-60 Peaty JC See No. 14. (Pre-chill for 4 weeks).
Camellia HSh 30-90 ˆ 70-75 Peaty 1/4² See No. 13 . May also benefit from No. 14.
Caragana HSh 14-21 L 65-70 Well drained S See No. 13.
Carpinus HT 30-365 L ˆ 65-70 Well drained S See No. 15. (1 mo at 70°F, 4 mos frig.) or No. 16.
Caryopteris HSh 30-90 ˆ 65-70 Well drained JC
Catalpa HT 14-30 L ˆ 60-70 Peaty S Give good ventilation to prevent damping off.
Ceanothus HSh 30-60 L 65-70 Well drained S Soak overnight then treat as No. 14 for 2 wks.
Cedrus HT 14-60 L ˆ 60-65 Well drained S Soak for 2-3 hrs then treat as No. 14 for 3 wks.
Cephalotaxus HSh 14-60 ˆ 60-65 Peaty JC
Cercis HSh 30-90 L ˆ 70-75 Well drained JC See No. 13. Soak in hot water, No. 14 for 2-3 mos.
Chaenomeles HSh 70-90 L ˆ 55-65 Well drained S See No. 14. (Pre-chill for 7-10 weeks).
Chamaecyparis HT,HHT 30-60 L 50-60 Peaty JC See No. 14. (Pre-chill for 3 weeks).
Chimonanthus HSh 63-90 L ˆ 50-60 Well drained S See No. 14. (Pre-chill for 5-8 weeks).
Chionanthus HSh 30-180 L ˆ 60-70 Well drained S See No. 14. (Pre-chill for 1 month)
Cistus HSh 7-30 L 65-70 Peaty S See No. 5.
Clerodendron HSh 60-90 L ˆ 65-70 Well drained S See No. 14. (Pre-chill for 4-6 weeks).
Colutea HSh 7-21 65-70 Well drained 1/16² Chip and soak. See Nos. 12 and 13.
Cordyline HHSh 30-60 ˆ 65-70 Peaty 1/16²
Cornus HSh 90-730 L ˆ 50-60 Well drained S See No. 15. (2 mos 70°F, 3 mos in frig) or No. 16.
Coronilla HHSh 30-60 65-75 Well drained JC
Cotoneaster HSh 180-365 L ˆ 70 Acid Peaty S See No. 15. (3-5 mos 70°F, 3 mos frig) or No. 16.
Crataegus HSh 180-730 L ˆ 50-60 Well drained S See No. 15. (3-5 mos 70°F, 3 mos frig) or No. 16.
Crinodendron H/HHSh 30-120 ˆ 55-65 Well drained JC See No. 13. (Soak for 3 hours).
Cryptomeria HT 30-60 ˆ 55-65 Peaty 1/16²
Cupressus HT 30-90 L ˆ 65-75 Peaty S See No. 14. (Pre-chill for 3 weeks).
Cytisus HSh 25-30 L 70-75 Well drained S See No. 13. Do final transplant while still small.
Daboecia HSh 30-120 L ˆ 55-65 Acid peat S Never allow compost to dry out.
Daphne HSh 150- 365 L ˆ 50-60 Well drained S See No. 15.(2 mos at 70°F +3 mos frig)
Davidia HT 300-365 ˆ 50-65 Peaty 1/4 See No. 15.(3-4 mos warm moist, 3-4 mos frig
Decaisnea HSh 30-180 ˆ 55-60 Well drained 1/4
Elaeagnus HT/HSh 140-180 ˆ 50-65 Well drained 1/16 See No. 15.(4 weeks warm moist, 8-12 wks frig
Enkianthus HSh 25-60 L ˆ 60-70 Peaty S See No. 14. (Pre-chill for 6 weeks).
Erica HSh 30-60 L ˆ 65-70 Peaty S See No. 14. (Pre-chill for 4 weeks).
Euonymus HSh 220-365 ˆ 50-65 Well drained 1/16 See No. 15.(8-12 wks warm moist, 8-16 wks frig
Fagus HT 30-365 L ˆ 50-60 Well drained JC Soak o/night, No. 14 (pre-chill 6 wks), or No. 16.
Forsythia HSh 30-90 55-65 Well drained JC
FremontodendronHHSh/HSh 30-60 65-70 Well drained JC
Fuchsia HSh 21-90 L ˆ 70-75 Peaty S See No. 5. Soak in rain water 3-4 days. Keep moist.
Gaultheria HSh 30-60 L 65-70 Peaty S See No. 14. (Pre-chill 4-10 wks). Acid soils only.
Genista HSh 14-30 55-65 Well drained JC See No. 13.
Gingko HT 30-60 L ˆ 70-75 Peaty 1/8 See No. 14. (Pre-chill 8-10 weeks).
Gleditschia HT 14-30 65-70 Well drained JC Chip and soak for 24 hours. See Nos. 12 - 13.
Gymnocladus HT 30-90 ˆ 65-70 Well drained 1/4 Chip and soak for 24 hrs. See Nos. 12-13.
Hamamelis HSh 270-365 L ˆ 50-60 Peaty 1/16 See No. 15. (3 mos at 70°F then 3 mos in fridge).
Hebe HHSh 15-30 70 Peaty JC
Hibiscus HSh 30-60 ˆ 70-75 Well drained 1/16 See No. 13.
Hippophae HSh 30-180 L ˆ 55-65 Well drained JC See No. 14. (Pre-chill for 14 weeks).
Holodiscus HSh 30-180 ˆ 60-65 Well drained S
Indigofera HSh 30-60 65-70 Well drained 1/16 Pour nearly boiling water over seed and soak o/night.
Jasminum HSh 20-30 70-75 Well drained JC
Juglans HT 30-180 L ˆ 50-60 Peaty JC See No. 14. (2-3 weeks). Plant with dividing line up
Juniperus HT 30-180 L ˆ 45-50 Peaty S Soak for 24 hrs. High temps prevent germination.
Kalmia HSh 30-60 L ˆ 70 Sandy peat S See No. 14. (Pre-chill for 3 months).
Kalmiopsis HSh 30-60 L 65-70 Acid, sandy peatS
Koelreuteria HT 30-60 L ˆ 55-65 Peaty JC See No. 13. Boiling water, then No.14, place in frig 3 wks.
Kolwitzia HT 40-70 L ˆ 65-70 Well drained JC Soak for 24 hrs then See No. 14. Pre-chill for 4 wks
Labumum HT 30-60 65-70 Well drained 1/16 Chip and soak. See Nos. 12 and 13.
Larix HT 30-90 L ˆ 65-75 Peaty S See No. 14. (Pre-chill for 1 month).
Laurus HT 40-90 L ˆ 50-60 Peaty JC Soak for 24 hours then See No. 14. Pre-chill 1 mo
Ledum HSh 30-60 L ˆ 55-65 Acid peat S
Leycesteria HSh 30-60 60-65 Sandy peat JC
Liquidambar HT 14-365 L ˆ 65-75 Peaty S See No. 14. (Pre-chill for 3 mos). Don't dry out.
Liriodendron HT 60-365 L ˆ 65-75 Peaty S See No. 16.
Loiseleuria HSh 30-60 65-75 Well drained JC
Lonicera HSh 180+ L ˆ 60-70 Well drained JC See No. 14. Place in frig for 3 mos. keep below 75°F.
Magnolia HT 120+ L ˆ 50 Well drained JC See No. 14. Place in frig 4 months.
Mahonia HSh 90-120 L ˆ 50 Peaty JC See No. 14. (Pre-chill for 3 weeks).
Malus HT 120-365 L ˆ 50 Peaty JC Soak for 24 hrs then No. 14. Pre-chill 14 wks
Menziesia HSh 30-60 55 Sandy peat S Keep compost uniformly moist.
Morus HT 14-30 L 65-75 Peaty S See No. 5. or See No. 14. Pre-chill 1-3 mos
Myrtus HHSH 30-90 ˆ 55-65 Peaty JC See No. 13.
Nyssa HT 90-365 L ˆ 50 Peaty S See No. 14. (Pre-chill for 3 months).
Olea HHT/HT 30-120 ˆ 65-70 Well drained 1/8"
Olearia H/HHSh 30-60 L 65-70 Well drained S
Ostrya HT 365+ L ˆ 50-60 Well drained JC See No. 16.
Paeonia HSh 270+ L ˆ 70 Well drained JC See No. 15.
Parthenocissus HSh 60-180 L ˆ 60-70 Well drained JC See No. 13 then 14. (Pre-chill for 6 wks).
Paulownia HT 30-60 L 55-70 Peaty S See No. 5
Philadelphus HSh 30-60 65-70 Well drained JC
Phlomis HSh 30-90 ˆ 65-75 Well drained JC
Phyllodoce HSh 30-60 L 55-65 Peaty S
Picea HT 30-60 L ˆ 55 Well drained S See No. 14. (Pre-chill for 21 days).
Pieris HSh 30-70 L ˆ 65-70 Acid Peat S See No. 5.
Pinus HT 30-60 L ˆ 55-65 Well drained S Soak seed, then No 14. (Pre-chill 6 weeks).
Pittosporum HHSh 30-60 ˆ 55 Well drained 1/16" Put seeds in bag, dip in boiling water for few secs.
Prunus HT 120-365 L ˆ 65-75 Well drained 1/16" Soak o/night then No. 14. Pre-chill 4 mos
Pseudotsuga HT 30-180 L ˆ 75 Peaty S See No. 14. (Pre-chill for 8 weeks).
Ptelia HSh/HT 80-120 55-60 Well drained 1/8" See No. 14. (Pre-chill for 3 weeks).
Punica HHSH 30-40 L 70-75 Well drained S See No. 13
Pyracantha HSh 40-180 L ˆ 50 Peaty JC See No. 14. (Pre-chill for 6 weeks).
Quercus HT 120-365 L ˆ 50 Peaty JC Soak for 24 hrs, then No. 14. Pre-chill 3 mos
Rhododendron HSh 50-90 L ˆ 55-60 Acid Peat S See No. 6. Keep shaded from direct sun.
Rhodotypos HSh 365+ L ˆ 55-65 Peaty JC See No. 15. (3 mos 70°F +3 mos chill +3 mos 70°F).
Rhus HSh 30-90 ˆ 65-70 Well drained JC Chip or soak. See Nos. 12 and 13.
Robinia HT 7-30 L 65-75 Well drained S See No. 13. Soak in hand hot water.
Rosa HSh 30-365+ L ˆ 55 Well drained JC See No. 16 or No. 14. (Pre-chill 3 months).
Santolina HSh 15-30 65-70 Well drained JC
Sarcococca HSh 30-120 55-65 Peaty JC
Sequoia HT 7-60 L ˆ 65-70 Peaty S
Skimmia HSh 30-180 L ˆ 50-60 Acid Peat S Soak overnight then No. 14. (Pre-chill 4 wks).
Sophora HT 10-21 70-85 Well drained JC Chip and soak seeds. See Nos. 12 and 13.
Sorbus HT 120-180 L ˆ 65-70 Well drained S See No. 14. (Pre-chill 4 months).
Spartium HSh 7-30 70 Well drained JC Chip and soak. See Nos. 12 and 13.
Spiraea HSh 30-40 55-65 Well drained JC
Styrax HSh 30-90 ˆ 55-65 Well drained JC
Syringa HSh 14-60 L 70 Peaty S See No. 14. (Pre-chill for 3 weeks).
Tamarix HSh 30-50 L 65-70 Peaty S See No. 5.
Taxodium HT 14-60 L 70 Peaty S See No. 14. (Pre-chill for 30 days).
Taxus HT 365+ L ˆ 70 Peaty JC See No. 15. (3 mos 70°F + 3 mos chill + 3 mos 70°F).
Thuja HSh 14-60 L ˆ 55 Peaty S See No. 14. (Pre-chill for 4 weeks).
Trachycarpus HT 40-90 L ˆ 55-65 Peaty S See No. 14. (Pre-chill for 4 weeks).
Tsuga HT 7-60 L ˆ 60 Peaty S See No. 14. (Pre-chill for 3 months).
Ulex HSh 14-21 65-75 Well drained JC See No. 13.
Vaccinium HSh 365+ L ˆ 65-75 Acid Peat S See No. 16.
Viburnum HSh 240-540 L ˆ 70 Well drained JC See No. 15. (3 mos 70°F + 3 mos chill + 3 mos 70°F).
Wistaria HSh 30-60 55-65 Well drained 1/8" Chip and soak in hand-hot water See Nos. 12 and 13.
Zelkova HT 14-60 L ˆ 50-70 Peaty S See No. 5 or No. 14. (Pre-chill for 2 weeks).
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