Lasagna Gardening 101
by Patricia Lanza, author of the Lasagna Gardening Series
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First Lasagna Gardener
Before you buy the first plant, or lay down the first sheet of wet newspaper, take a look around your property. Check to see where you get the best light; that's where you'll put your garden. Decide on the shape and contents of your garden. The size of your plot will determine how much material you need to make your first lasagna.
Your material list will change depending on where you live. Some folks have more leaves than others, some have seaweed, others ground cornstalks or apple pulp. Some of the lucky ones have access to animal manure.
There's no hard and fast rules about what to use for your layers, just so long as it's organic and doesn't contain any protein (fat, meat, or bone). Before I go any further, let me just say that the basics of making garden lasagnas are simple:
- Don't remove the sod or do any extra work, like removing weeds or rocks.
- Mark the area for your garden using a water hose or a long rope to get the desired shape.
- Cover the area you've marked with wet newspapers, overlapping the edges (5 or more sheets per layer).
- Cover the paper with one to two inches of peat moss or other organic material.
- Layer several inches of organic material on top of the peat moss.
- Continue to alternate layers of peat moss and organic material, until desired thickness is reached.
- Water until the garden is the consistency of a damp sponge.
- Plant, plant, plant and mulch, mulch, mulch.
Start with layers of newspaper or sheets of cardboard.
Then cover with mulch.
You need less loose material to plant in than you might think. In the spring of '98, I layered an area where a dog pen had stood for years. The property belongs to a 79-year-old man who was upset about his inability to garden as he once had. Until recently, a 100-year-old white pine tree had occupied the center of the fenced-in area. But its roots had begun to do real damage to my friend's house and surrounding properties, and so the tree had to be taken down. Once the tree was removed, the area was bright and sunny, but, unfortunately, the ground contained 100 years worth of layered pine needles.
First, we covered the area with lime, then laid whole sections of wet newspaper on top of the pine needles and covered the paper with peat moss. We bought a small truckload of barn litter mixed with our local clay soil and covered the peat with two inches of this mix and then two more inches of peat moss. Additions of one to two inches of grass clippings, two inches of peat moss, one to two inches of compost, and more peat gave us a total of about six to eight inches to plant in.
We pulled the layers apart and planted 31 tomato plants, four squash, six cucumber, four basil, two rosemary, four parsley, and twelve cosmos. It was a jungle, but with staking, pruning, and tying, the garden produced so much fruit that the entire neighborhood helped eat the harvest, and the cosmos were so beautiful they took our breath away.
Once the harvest was finished, I pulled the stems and disturbed the layers for the first time. Pieces of the paper layer came up with the roots. So, too, did the biggest earthworms you can imagine. The soil was still probably a bit acidic, but it will get better in time.
To prepare the new garden for another year of planting, we spread the contents of a large composter onto the space, and the garden took on several inches in height. The last mowing of grass provided enough clippings to add another few inches. When the fall came, we mowed the leaves for a top dressing of four inches of chipped leaves. I love an edged garden and so the last thing I did was cut a sharp, clean border around the sides, throwing the edging material up onto the garden, with grass side down, for another layer of more good dirt. It looked beautiful!
Close planting and mulching greatly reduced the amount of weeds in the dog-pen garden, as they do in all my gardens. It also meant less watering, since the paper and mulch kept the soil around the root zone cool. Even though we pushed it a bit by planting 31 tomato plants, the staking, tying, and pruning, in addition to close planting, created a healthy growing environment, with few garden pests. It was another test, and the results have left my friend confident that, as he enters his 80th year, he will be able to continue gardening with the lasagna method.
Indeed, lasagna gardening is so simple that the hardest part may be getting started. I suggest beginning with that walk around your property to determine what you can do with what you have. If you get lots of shade, plant a shade garden or cut some tree limbs. Track the light for a couple of days during the spring and summer. You probably have more light than you think--not sun, but light. Lots of rocks? Try rock gardening. You might learn to love the wonderful world of small plants that thrive in rocky terrain. Too little space? Look again. If there's a foot of space, you can plant in it.
There's no such thing as work-free gardening, but the lasagna method is close. Once you train yourself to think layering, and learn to stockpile your ingredients, you will work less each year. Following are some of my favorite vegetables, along with tips on how I grow them the lasagna way:
Many gardeners shy away from this tasty crop, mainly because it's difficult to grow through traditional means. Not so with lasagna gardening. I still remember the first year I planned my asparagus patch. Turned out to be one of my best vegetable trials yet. For fun, I grew a tray of plants from seed, started indoors in February. In early spring, I added the small seedlings to the assembly of roots--one, two, and three years old--that I had accumulated to plant together.
Using a mattock blade, I scraped a shallow opening in a newly made lasagna bed, an inch or two deep. I combined the roots and seedlings in the opening and covered them with a sifting of soil and peat moss. Once the roots were planted, I covered the top of the row with a mixture of manure and peat moss.
As the roots sprouted and grew, I added sifted compost and grass clippings. In the fall, I added more manure and a thick layer of chipped leaves for winter mulch. During the first spring, I watched the asparagus emerge and grow. I invited inn guests into the garden to help me cut and eat the first tender stalks. Then I mulched, mulched, then mulched some more.
The second spring, I cut so much asparagus we had some to freeze. It was all so easy: plant, mulch, harvest, and enjoy.
Site and soil. A heavy feeder, asparagus needs well-drained soil and at least six hours of sun. The fall before planting, build a lasagna garden on the site you've chosen for your asparagus, using a base of newspaper topped with 18 to 24 inches of layered organic material. By spring, the lasagna bed will have composted to ideal soil conditions for asparagus.
Planting and harvest. The time is right when the soil is thawed and crumbles in your hand. Plant in rows two feet apart in two shallow trenches, with a rise in between. This lets the crowns sit on top of the rise, with the roots in the trenches. Plants should be 18 inches apart and covered with two to three inches of soil and compost mixture.
As the plants grow during the summer, continue covering with the compost enriched mixture until crowns are four inches deep. In the fall, cover the entire bed with a blanket of eight to ten inches of chopped leaves or other organic mulch. Each spring, feed the bed compost enriched with manure. In colder regions, pull the mulch back on half the bed to get an extra early harvest, saving half the bed for later harvesting. Once the harvest is over, the remaining shoots expand into ferny top growth. When the ferns turn bronze, cut them back.
I usually wind up planting many more beans than I actually need. But with so many varieties--all so much fun to grow--who can resist! Once the last chance of frost is past, plant your favorite bean seeds. Divide your seeds into thirds and plant every two weeks for a longer harvest.
Once I have a lasagna bed in place, I plant bush bean seeds along the edges. They only need a few inches, since the plants will lean out over the sides of the garden, leaving room for taller crops. I plant pole bean seeds around the base of teepees made from six-foot bamboo poles. Plant seeds around the base of each pole, and when they start to climb, give them a boost up the trailing twine you have tied from the top.
Site and soil. Beans grow best in well-drained soil that's high in organic matter. A new or established lasagna bed in full sun works best for all types.
Planting and harvest. Fix supports in place before planting pole bean seeds. For both types, pole and bush, just push the seeds into loose soil about two inches apart. Cover the seeds and press the soil around them for direct contact.
Keep the soil evenly moist until seeds emerge, then cover the soil with a good mulch to keep the soil cool, the leaves clean, and the garden weed-free. To avoid rust, don't work beans when foliage is wet. Once beans start to appear, keep crop picked to encourage new bloom. Rotate crops every year to avoid pests and disease.
Bush cucumbers can be grown in small spaces and containers. Climbing cucumbers need strong support, so plant close to a fence or trellis. I like the climbers and try to see what kind of new supports I can come up with each year to make the garden more interesting. I loved the string cradles we tied to a stockade fence one year. The vines grew up strings hanging down into the row, then up the string cradles and onto the fence.
Site and soil. Cucumbers need good drainage and rich soil. Lasagna gardens are just the thing, when enriched with fresh manure. However, wait three years before planting in the same place to avoid pests and disease.
Planting and harvest. Wait until the last frost is past, then plant prestarted seeds covered with floating row cover in colder regions, and seeds sown directly in the garden in milder climates. Keep mulched and don't till, as cucumbers are shallow rooted. Maintaining at least six inches of mulch at all times keeps the roots cool and moist, but they still need an inch of water each week. Pick the fruit when it's small and most flavorful. Once the harvest starts, don't miss a day, or you'll have candidates for the compost pile instead of the salad bowl.
If you've never tried growing garlic, you've missed something special. I make a rich lasagna bed, let it cook for four to six weeks under black plastic, set strings up to keep my rows straight, and push in single cloves just enough to see they are covered. When the foliage is full and seed heads form, I cut and use them just as I would cloves. When the foliage turns yellow or brown, it's time to lift the garlic.
Loosen the earth and gently shake off any dirt. Let the cloves cure by hanging them in a dry place. The individual cloves will each make a head, so you will have plenty to use, as well as to save for next year's seed.
Site and soil. Good drainage, full sun, and plenty of manure-rich compost are best. A well-built lasagna bed has the perfect growing conditions to start, then all you have to do is add grass clippings or chipped leaves for mulch to keep the soil evenly moist and weeds at a minimum.
Planting and harvest. Gardeners in the Northeast and zone 5 and colder climates will get best results from hard-neck garlic planted in the fall and harvested the next summer. Milder climates can grow soft-neck; plant in the spring and harvest that same fall.
If you haven't room for an entire bed just for garlic, plant some in groups of three to five cloves in flower or vegetable beds. Folks who have bug problems swear by the positive effect garlic has on its companions.
Anyone can grow lettuce. The problem is most folks grow too much at one time. Use a little restraint and make successive plantings. Mix lettuce seed with sand so you will not have to do so much thinning. I broadcast a mixture of cut-and-come-again lettuce once a month for the duration of growing time for my zone.
Site and soil. Lettuce likes it cool and so is ideally suited for spring and fall plantings. I use other taller plants to shade my lettuce in summer. It's best to prepare a site for lettuce in the fall, adding a high nitrogen amendment (such as fresh grass clippings) to the top two inches of soil.
Planting and harvest. Lettuce is a fun crop to grow in containers, as borders, and in tiny spaces that would only go to waste otherwise. There's really no safe place to hide when I start looking for places to plant. I've planted Ruby Red and Oakleaf lettuce in my herb and edible flower containers and flower boxes. I interplant herbs and lettuce in the border gardens that surround my antique roses. The Mesculun mixes are wonderful in big terra cotta saucers that stand alone in part shade.
When guests come for dinner, I give them a colander and a pair of scissors and point them toward the garden. They come back with an interesting collection of edibles and never forget the experience. Lots of good gardeners start out by getting their feet dirty in someone else's garden.
No need to dig trenches or to hill up. Build a lasagna bed to eliminate grass and weeds, don't use any lime or nitrogen-rich materials (such as grass clippings), lay down one or two sheets of wet newspaper, lay seed potatoes on top of the paper, and cover with spoiled hay or compost. You can use pretty much anything you have that is dried. Chipped leaves are great for covering the tubers. I use hay that is well-cured and lying next to my potato bed, so I don't have to carry it too far.
Site and soil. Potatoes need full sun, good drainage, and can tolerate acid soil. Preparing a lasagna bed and adding bone meal or rock sulfate produces a good harvest and large tubers. Avoid planting potatoes where you have grown them or their relatives (including eggplant, peppers, and tomatoes) for the past three years.
Planting and harvest. Be ready to plant in early to midspring and have enough material to cover the bed with ten inches of mulch. Be prepared to add several inches of cover to the bed as plants grow. The important thing here is to keep the tubers covered so they will not see the light of day. By the end of the growing period, the plants will be propped up with hay or other soil amendments.
Slip your hand under the mulch to harvest a few small potatoes when the beans are ready to pick. Let the rest continue growing until the foliage has yellowed. Don't try to dig! Lift the mulch and pick the clean tubers up off the newspaper.
Be on the watch for potato bugs. Try to catch them when they are small. Sweep across the foliage with a broom. They will fall into the mulch and, when small, not be able to find their way back up to the leaves.
The toughest part of growing tomatoes is choosing the kinds you will grow. You'll likely want to plant several different varieties each year: there's early, midseason, and late ones; tiny pear shaped, cherry, patio, plum, slicing, and cooking varieties; plus, tomatoes for juice and for stuffing, not to mention new types and heritage.
Site and soil. Tomatoes need full sun, an inch of water per week, and protection from the wind. Ideal conditions are a lasagna bed that has been around for at least a year and has not grown any of the relatives: potatoes, eggplant, or other tomatoes.
I prepare my site by installing water jugs buried up to their shoulders between where every two plants will be. A pin hole in the sides facing the plants should let enough seep out to keep up consistent watering. I place a tall stick in each jug, its top colored with red paint or nail polish. This helps me find the sticks, which helps me find the openings to the jugs when all the foliage hides them from view. I fill the jugs with a funnel and the water hose. You can add liquid plant food to the water if you like.
Planting and harvest. Wait until after the last frost, then plant the seedlings. Create a well of soil around the stem to help catch any rain. If you have prepared the lasagna bed in advance, all you will have to do is scrape the soil aside and lay the plant down up to the last four leaves. Press the soil around the plant to make direct contact and push out any air pockets.
Once the jugs and plants are in place, make a collar of one or two sheets of wet newspaper, place it around the stem, and cover the paper with mulch. Depending on the type of tomatoes you have chosen, you will need to stake, tie, prune, and pinch. Keep the water jugs full and check plants regularly for bugs or disease. Don't get impatient; tomatoes need lots of long hot sunny days and warm nights. Again, depending on the cultivar you have chosen to grow, you can look forward to your first harvest in 55 to 100 days after you set the plants out.
And, oh, what a delicious harvest! I love tomatoes warm from the garden--standing over the row, biting into one, the juice running off my chin, dripping from my elbow, the acid tingling my tongue. It just doesn't get any better than that.
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