Lettuce: From Seed to Feed - Part 2: Saving Seed

By Llyn Peabody 

If you grow your own lettuce, as the weather warms, it's not uncommon to have some of it "bolt" (try to go to seed). Saving lettuce seed is fairly easy and a good entry-point for those new to the process. Here is a re-publishing of a post we wrote back in 2011 but the information is just as relevant today. Happy seed-saving :-).

Saving your own seed is an important aspect of developing local food self-reliance. Relying on commercial seed farmers may become increasingly unreliable as climate change disrupts weather patterns and seed crops falter. Growing your own seed slowly modifies your plants to be uniquely suited to your micro-climate and growing conditions. Networking with other seed-savers in your area builds a sense of community. LINK: Locally Sustainable Gardening in the Face of Supply-Chain Shortages

 

Lettuce flowers - close-up.

Seed-saving can seem intimidating at first. I know I felt that way. Many vegetables will cross with their neighbors yielding inconsistent results. There are many questions that must be answered before moving forward. For this reason I definitely recommend Suzanne Ashworth's "Seed to Seed". It is a comprehensive manual that covers all aspects of seed-saving. I am also grateful to my husband, Chris, for all he has taught me from his 40+ years of gardening. He's helped me translate the book knowledge into experiential learning. Saving seed appeals to the outlaw in me, I guess. Like treating illness with herbs I grew myself, there is something empowering about developing skills usually left to "the experts". As it turns out, it's not really that difficult at all.

"Red Sails" lettuce - blooming. "Red Sails" lettuce - blooming.

Saving Lettuce Seed: Like most things in gardening, a bit of forethought goes a long way. Ashworth recommends 12' - 25' separation between types of lettuce to prevent cross-pollination (the farther the better). Plan your plantings (and harvesting) to leave sufficient distance between the flowering plants. Though you may have enough time to bring a Fall crop of lettuce to seed, we usually do our seed-saving with the lettuce we plant in the Spring.

 

Note: Be sure there is no wild lettuce that is forming seed near the varieties of domesticated lettuce you are saving seed from as it can cross. The plants that grow from these crossed seeds tend to be more bitter and course. There are several varieties of wild lettuce; this one is named Lactuca Serriola LINK.

Lettuce bolting - Black-Seeded Simpson Lettuce bolting - Black-Seeded Simpson

 Lettuce is an "annual" crop. This means that the plants will produce seed in one season (without over-wintering). As the weather gets hotter and drier you will notice on romaine or "leaf" lettuce a definite lengthening of the plant. ("Leaf" types form a loose rosette of leaves but not a tight "head). When it lengthens, it is starting to "bolt". Lettuce that is bolting gets noticeably more bitter (probably nature's way of protecting the plant in this important phase of its reproduction). On "head" lettuce (such as Iceberg), Ashworth says it can be helpful to slit the head, forming a cross-cut with a sharp knife, making it easier for the flower-stalk to emerge. She says some gardeners strike the head of the lettuce with the palm of their hand thus breaking the leaves away from the stalk. Without some effort to free the flower-stalk, head-rot from heat and humidity may kill the plant before it can go to seed. So far we have saved seed mainly from "leaf" lettuce. This summer we will experiment with our red and green "head" lettuces to see what works best for us and report back.

Lettuce marked for seed with bamboo. Lettuce marked for seed with bamboo.

As we are gardening with a group of people, we have found it essential to clearly mark the plants that we are saving for seed, so they are not harvested by accident. We have made small tipi's with bamboo sticks, tied a red ribbon around the plant or put a small sign on a stake and driven it in nearby. Even a plant that is obviously past an edible stage for harvest is not safe as a well-meaning fellow-gardener may assume the responsible thing to do is weed out your seedy lettuce plant and toss it on the compost pile!

Staked lettuce - the flowers get heavy. Staked lettuce - the flowers get heavy.

As the flower stalk grows it will produce a big head of flowers. You may need to tie it to a stake so it doesn't fall over. Seed production occurs 12 - 24 days after flowering. Ashworth says you can harvest seeds daily by shaking the stalk over a large paper sack. The ripe seeds will fall into the bag. The method we have used is to wait until the majority of seeds are ripe and to cut off the whole flower head and place that in a paper sack. Leave the sack open in a warm, dry place (like the top shelf your tool shed) until the flowers are thoroughly dry. Be sure to label the bag with the name of the lettuce variety. If mice are a problem and you have the space, try hanging the open bag from rafters.

To winnow the seeds, roll the flowers between your fingers and the palms of your hands to free them . Lettuce seed is challenging to separate because the seeds are not much heavier than the chaff. Patiently drop small amounts of the seed/chaff over a tray, from a height of a foot or two while blowing gently. The seed should drop and the fluff blow away. Some people run the seed through screens but we have not tried this method. Commercially available seed-sifting screens are another option. They have different sized holes.

Put ripened lettuce flowers into a paper bag to finish drying. Put ripened lettuce flowers into a paper bag to finish drying.

Lettuce seed will remain viable for 2-3 years if kept in a cool, dark place, in an air-tight container.

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Saving Tomato Seeds

Striped German - Heirloom tomato

One of the missions of the Sharing Gardens is to educate people about the importance of seed-saving and to offer techniques to demystify this process. Today's blog covers the practical steps necessary for saving one of the home-gardener's favorite fruits: the tomato! If you're new to seed-saving tomatoes are good to start with because of their relative simplicity.

In order to save seeds that will "grow true" and produce fruit similar to the one you saved seeds from, you must start with an "heirloom" or "open-pollinated" (OP) variety (not hybrid). Hybrid seeds are artificially created by seed companies to produce plants with unique qualities (early ripening, bug resistance etc). The problem is that they don't "breed true". If you save seed from hybrids, next year's plants may or may not be what you want. If you wish to save seeds, choose seeds or starts that say "open pollinated", OP, heirloom or non-hybrid.

"Heirloom" tomatoes come in all types: here are large paste-tomatoes called "Long Toms"

OK, so lets say you have grown some beautiful heirloom tomatoes and you're ready to save seeds. If you have more than one plant to pick from, choose the plant that is healthiest, most robust, earliest to ripen and with the largest and/or best-tasting fruit. Then, pick one or two fruits that are the best examples of these same qualities.. If there are other people who harvest from your garden, put a twist-tie, or in some other way mark the fruit so no one picks it prematurely. We often use onion or citrus bags (plastic, stretchy netting) so we can actually cover the fruit, making it clear that it's not to be picked. Let the fruit come to fullest maturity possible. It's OK even if it starts to rot a little.

Black Krim (below) and Striped German

Here are two heirloom tomato varieties we saved for seed this year (right). We saved them as beautiful examples of color, juiciness and size. That's a Black Krim on the bottom and a Striped German on the top.

In saving seed, you wish to mimic nature's process. Have you ever noticed what happens to the tomatoes left in the garden after the first frost? They turn to a slimy mush, with the fruit eventually dissolving away from the seed. In the following year, robust little volunteers emerge from where the tomato rotted. The way we mimic this process: Remove the stem from your chosen tomato and put it in the blender with enough water to fill a quart jar. Whiz it in the blender, at a low speed, just long enough to separate seeds from fruit. Don't worry about the seeds. They have a protective gel that keeps the blades from harming them. Pour them into a wide-mouth glass jar. Be sure to swirl the blender as you pour the last liquid out so no seeds are left in the bottom. If you're processing more than one tomato variety in a row, rinse the blender well so you don't mix seed varieties. Label the jar so you remember the variety of seeds you're saving.

The next step is to leave them to "rot". To minimize fruit-flies secure a piece of cheese cloth over the opening with a rubber-band or canning-jar ring. Leave them in the open jar for 4-7 days. When it's warm outside, the process will go faster. Stir them once or twice a day with a chopstick to help separate the seed from the pulp. The pulp and non-viable seeds will form a layer at the top. The healthy seeds will sink to the bottom. Look for a nice scum to form on the top. Mold is OK. The picture on the left is of two varieties of tomato seeds in process. The ones on the right were just blended so no layers have formed. The ones on the left have been sitting a few days. The other picture shows the quality of the scum that has formed on the tomatoes once they are ready for the next step. Notice the bubbles which indicate a mild fermentation process.













The last step is to dry the seeds. Spoon out the scum and pour off most of the water. The viable seeds will have sunk to the bottom but be careful not to pour them out with the pulp/water. Add more water, allow to settle and continue to pour off excess flesh. Repeat this process till you've removed the majority of the flesh. Then pour the seeds through a fine-mesh strainer and rinse them in the strainer. Let them drip-dry and then tap them onto a piece of tin-foil, a jar-lid or other non-porous surface. We find that the lid to a plastic tub (like a yogurt container) works best as it's flexible and we can "pop" off the seeds after they've dried. Seeds will stick to paper towel or napkins. Transfer your label to the drying seeds and leave them to dry for a week or so. Be sure they are thoroughly dry before storage so they don't mold in the bag, envelope or jar.

Each seed-saver has his or her preference for containers to store seeds in. We use clean, small plastic bags or recycled plastic pill-bottles or other small jars. The most important thing is to keep your whole seed collection in a dry, dark environment with moderate temperatures, in air-tight containers. Avoid freezing or excessive heat. Stored well, tomato seeds can remain viable for many years.

Tomato seeds drying.

Winter at the Sharing Gardens

Our newest greenhouse - the Sunship - Sept. 2016

Greetings everyone! Here we are heading into our ninth year with the Sharing Gardens, Can you believe it? From our humble beginnings at Alpine Park, with an 80'x80' garden-plot, an 8'x8' greenhouse, a handful of tools and willing spirits we've grown to the thriving, expanded project we are today.

In the beginning, we didn't even have pictures to use on our website so borrowed photos Chris had taken in previous gardens. LINK to first Post - A Seed is Planted Our readership has steadily grown over the years and is currently experiencing a surge in readership that peaked with over 17,000 site-visits in December 2016 alone! It has tapered off slightly since this peak but we are still averaging 300 visits per day. These visits come from all over the planet both for practical gardening knowledge and for inspiration about the power and joys of generosity.

Home-grown dinner!

This post features info about what happens at the Sharing Gardens during the winter months. Enjoy! From December through about mid-February, activity in the gardens is minimal. Here in the Willamette Valley of Oregon, our winters are typically cold and rainy (with occasional snow and freezing temperatures) and the shorter day-lengths mean that any plants that are still growing in our greenhouses (kale, fava-beans) just maintain their current size, without adding any growth until days get longer.

So, just what DO we do to prepare for the coming Spring?

Because we practice a style of gardening that requires deep mulch, even in our greenhouses, the winter is time for preparing beds. Preparing Garden Beds - One Low-Tech Way-LINK
 

Our largest greenhouse with tomato plants on left, peppers and fig-trees on right. October 2016.

As the season comes to a close, and the last of the summer crops have been harvested, we rake away the left-over straw from the paths of the greenhouses. We remove cages from the tomato and pepper plants, cut them off at ground level and cut them stems up in 6" - 8" pieces and put these pieces in the paths underfoot. The stems are too course to decompose by planting time which is why we don't cut them in the garden beds. Cutting them speeds up decomposition and, by the time plant-roots are reaching out under the greenhouse paths, the stems will be almost entirely broken-down.

The next step is to cover the paths with the straw raked off prior to cutting up the plants. Clear any remaining straw, or plant matter off the greenhouse beds. The garden-beds - where we'll be planting in the spring - are generously sprinkled with coffee-grounds, and a dusting of wood-ashes.

Greenhouse beds covered in 1/2' coffee-grounds and a light dusting of wood-ashes.

We have been experimenting with creating greater soil-fertility using coffee grounds and wood-ashes. Coffee grounds are available for free from most coffee-shops; they're grateful to have someone come pick them up! And though they're not sustainable, they are a free resource at this time. For some reason, red-wiggler worms (also called manure worms) just love coffee! If you spread it liberally on your soil, they will migrate to find it. Their worm poo (castings) provides many nutrients that plants love and the tunnels they make help aerate the soil. Wood ashes should be used sparingly; they are very potent but provide a bounty of minerals to the soil.

Worms love coffee grounds!

Coffee grounds provide generous amounts of phosphorus, potassium, magnesium, and copper. They also release nitrogen into the soil as they degrade. When we have it, we spread it about 1/2" thick. We also layer it into our compost piles. Coffee grounds - Will They perk Up Plants - LINK

Wood Ashes provide all necessary nutrients except nitrogen and sulfur.  We use ashes from our wood-stove (that heats our house). We use only newspaper to start the fires and burn pure wood. We don't burn anything with paint; no ply-wood or other man-made products so the chemicals in them don't get into our food-chain. We sift the ashes to remove any big chunks, nails or screws. Be very careful not to use too much! We put just the lightest dusting in our beds. Do not use wood-ash to make a potting soil. It is caustic to worms and will alkalize your soil so use only a little and wait before planting seeds or seedlings. Do not use around acid-loving plants (like blueberries, or in potato-beds). Article from our local University Extension Service: Wood Ashes Can Benefit Lawn and Garden

Chris adds leaves to the greenhouse-beds - about 6" is ideal.

Next we add a thick layer of leaves, a layer of straw and, if we have it, green-grass clippings and more coffee grounds. Ideally we cover each garden bed with a layer of carpet, or cardboard - to keep in moisture and hasten decomposition, but sometimes we just leave the rows open to the air. All this organic matter is slowly eaten from below by worms and fungi and bacteria. In the spring, these beds will be ready to plant our new crops.

December 2016. Note trellises for winter-peas, a re-purposing project from an old chicken-coop (from left, to center). Light-green carpet covers row in lower-right corner.

Winter is also a time for pruning our fruit trees and blackberry bushes. Pruning helps fruit trees stay healthy and productive. Almost all our fruit trees were mangled by deer in their first year and a half so we still haven't had much fruit from them yet. Most of them have lots of fruit-spurs this winter so we're hoping that 2017 brings more fruit. In a few years' time, our 3-dozen apples, pears and plums should yield enough surplus that we can share the bounty with local food-charities.

 August 2016. Here is our first harvest from an Asian pear we planted in 2014. Not much, but they sure were delicious!

We've been enjoying herbal tea made from rosehips and fennel-seeds we grew and dried. Here are rosehips from rosa rugosa a hedge-rose that grows well in our climate that we started from seed three years ago.

October 2016. In mid-Autumn, we mulched most of our outdoor garden-beds with leaves and straw so they will be ready for planting in the spring. Chris looked under this straw just last week and found many worms! Even though the ground is saturated from winter-rains, the worms thrive at the surface where the straw meets the ground.

January/February is the time to plant biennial, root-crops for seed.

Carrots, beets and onions all produce seed in their second year so you must save them in your refrigerator or a root cellar and re-plant them to grow-out for seed. We plant them in gallon pots in January or February and than transplant them into the ground later in the spring. Seed-harvest occurs through much of the summer-months.

Tomatoes, peppers and squash make a bright compost pile!

We continue to build our compost piles. We don't have as much material to add to them at this time of year as the garden-debris has mostly been collected. The bins we are filling now won't be ready to use in the gardens till summer-time but you can never have too much!

We continue to process food for long-term storage. Llyn likes to make pumpkin-pie filling for freezing. In early January she noticed some of our Provence squash was showing signs of rotting so she had a marathon session and froze ingredients to make 22 pies. Yum! Making Pumpkin Pie from Scratch - Recipe - LINK

Baking Provence squash, a favorite for pie! Yes, it really is that orange, and so sweet!

Winter is also time for indoor-construction projects. Below, is a wood stove that Chris made from a kit that comes with legs, a collar and door for the stove. Holes must be cut out of the barrel using a metal-cutting saw. We purchased a used barrel from a food warehouse and Chris discovered that the barrel we bought for $4 had almost a gallon of honey still in the bottom which he drained and we enjoy on our toast!

 Here's a wood stove that Chris made from a kit.

Cleaning and lubricating hose-fittings, valves and timers so they'll be ready to use in the spring.

Each summer we dedicate a sizable amount of garden space to crops that store well: winter squash, potatoes, beets, carrots and storage onions to name a few. We want to be able to augment the Food Pantry's fresh produce offerings for as long as possible when their donations from other local sources begin to diminish. To be honest though, by the time all our share-givers receive their share of winter crops, the only thing we really have surplus for the Food Pantry is winter squash. Perhaps in future years we'll be able to increase our output, or other local gardens will join us in the project and dedicate a row of their space to storage crops to share.

Last week we delivered the last of our winter-squash and hot-peppers that we had saved to share with the Food Pantry. Because we plant our peppers and tomatoes in greenhouses, we can harvest them after everything outside is drooping and dying from heavy Autumn rains. We do have to harvest them before the first hard-freeze or they'll rot on the plant, even in the greenhouses. Our last harvest this year was December 6th!

The last of summer-harvest! Dec. 2016.

We are so grateful that the winter solstice has passed and that days are getting longer! In another six weeks (mid-February) it will be time to start seeds again for cool-weather crops (onions, cabbage, broccoli, lettuce, to name a few). Still plenty of time to finish our pruning, paint some more signs, clean and organize our garden-sheds and workshop and perform other maintenance tasks.

August 2016. Can't wait for next year's tomatoes!

The Sharing Gardens project is a unique model of community garden that is 100% non-commercial, uses local materials for soil-fertility, provides thousands of pounds of free produce to local food-charities and encourages gardening as a way to increase wildlife habitat. 

Grow Your Own Protein - Scarlet Runner Beans

by Chris Burns

Just like snow flakes, you'll never find two that look exactly alike,  attesting to Nature's infinite variety of expression!

Have you ever seen these beautiful beans for sale at any market?  Would you even know what they were if I didn't tell you?  Don't they look like some kind of 'Magic Bean' that Jack of 'The Beanstalk' fame might have planted?  If you haven't guessed by now, I'll tell you. They're Scarlet Runner Beans and they're called that for two good reasons.  One, they have the most intensely scarlet red flowers, and Two, they 'run' up any pole, tree, fence or trellis that happens to be close to where they are growing.  If you've never grown them then maybe it's time to consider giving them a place in your garden.

I've grown them many times before, but up until recently I always considered them to be strictly 'ornamental'.  Don't know why!  Perhaps it's because they were described that way in the catalog from which I ordered my first seeds.  As you can see in the pictures posted with this article, they add exquisite beauty to any garden patch. It wasn't until 2011 that I sampled them as cooked, dried beans and discovered their beauty is only rivaled by their delicious flavor!

Scarlet Runners vining up the bamboo trellis. We grew a 70-foot row last year and are doubling it in the 2013 season.

These beauties grow steadily to a dramatic height of 10-12 feet (or more) and need a sturdy trellis of some sort to support the weight of their generous profusion of bean pods (we used bamboo poles tied to a wire pulled taught between t-posts). For those who enjoy attracting pollinators to your garden, you'll likely find (as we did) that the flowers regularly attract hummingbirds and many beneficial insects. (If you have cats, best not to grow the runners as we've heard sad tales of hummingbirds being caught and killed by those furry, domestic predators).

Bean-trellis made with bamboo poles wired to a cable.

Scarlet Runner Beans will grow in a greenhouse too. Just be sure to leave enough vents open to allow pollinators to come and go.

Plant beans 4"-6" apart and 1"- deep. Soil can be course and should stay moist but not too wet as seeds germinate. Often we will pre-sprout the seeds by keeping them between wet towels for several days till they germinate. Be very careful when planting as the sprouts are fragile.

The pods are deliciously sweet when they are young and tender (about 3-4 inches long).  So sweet, in fact that it was the first thing our two teen-age garden-helpers would seek out and munch on whenever they came to the gardens.

Bean pod-loving teens!

If it's mainly green beans that you're looking for though, it's probably best to grow another variety like 'Blue Lake' or 'Contender' which provide you with more of a volume at each picking.  These Scarlet Runners tend to produce pods steadily over a longer season but they become tough and stringy if they aren't picked on the small side.  The reason they probably aren't grown commercially for dried beans is that they must be hand-picked. At the Sharing Gardens we've turned this limitation into an asset as the weekly bean-picking was a task that folks with back and knee-issues could accomplish easily standing up. After a few days laid out on screens in the greenhouse the husks were dry enough to split open easily by hand. This was a task that many volunteers (share-givers), who weren't able to do more strenuous tasks,  found fun and relaxing; it also provided an opportunity to sit in the shade and chat with new found friends.

Pods, any bigger than this and they're too tough to eat green.

If it's dried beans you want, don't pick the pods until they are evenly tan and dry. If picked too green, beans won't store well, nor will they be viable for planting next year's crop. Once the frost hits, beans will no longer ripen much more. Pull up the whole vine and let the beans finish ripening in a green-house or warm, dry place before picking them off the vines. When they are as dry as they're going to get, shell these partially ripe beans and use them first as they won't store as well as fully cured beans.

These beautiful beans are rather large --about the size of a fat Lima bean-- and therefore yield enough to make a pot of soup-beans in a short time. If you're serious about growing your own protein-source, Scarlet Runners make an excellent choice.

Harvest beans once their pods are tan and dry. OSU-students shelling Scarlet Runner Beans.

Shelling beans from their pods is a fun activity for all! Jim and Adri shelling kidney beans.

But the best kept secret of all is just how delicious the dried beans are. They have a mild flavor and, unlike Fava beans, their skin is thin (not even noticeable) and they have a velvety texture.

A bamboo tipi provides a trellis for beans and beautifully frames our garden helpers.

Recipe: To cook these beans for eating, soak them over night just like you would any other, with about 1/3 beans to 2/3 water in a stainless or cast iron pot.  Pour off the water the next day; rinse the beans with fresh water and put them back in the pot. Add fresh water until the level is about 2-3 inches over the beans.  Don't add any salt because it won't allow the beans to absorb the water as they cook and they'll never soften.  I like to cook them on the woodstove in the winter.   These beans stay very firm when they're finished cooking but can be easily mashed and used as refries, or made into a hearty chile with tomatoes, onions, peppers and Mexican spices.  I cook up a large pot at a time and, once rinsed and cooled, I pack them into smaller zip-lock bags which I stack in the freezer to add to stir-fried kale and leeks with potatoes all winter long. Instant dinner!

Be creative! Sometimes just a plain ole' bowl of beans with olive oil, soy sauce, finely chopped onions and grated cheese is all you need to get you in the mood to go outside and brave the winter elements.

Such beauty!

Anyway, if you want to enjoy these wonderful and versatile garden gems, the time to plant is coming up soon! (late May or first week of June in our region)  If any of our local readers need seed  please let us know and we'll get you started, and you can save your own for next year.  Happy Gardening!

To see other "How To" articles, go to our new and improved site: http://thesharinggardens.blogspot.com/

Caleb loves scarlet runner-beans! So sweet, when they're young and tender.

Lettuce: From Seed to Feed - Part 1: Planting

Red Iceberg Lettuce - a summer rose!

Here in the Pacific NW, we start our lettuce seed in a greenhouse in late February and then transplant the starts out in April or May when conditions allow. We're vegetarians and end up with a lot of those white, plastic, square tofu containers. We've found they make great tubs to start small seedlings. We drill holes in the bottom for drainage, fill with a good potting mix (using the bottom of another tofu tub to pack the soil firmly and make a flat surface for the seeds).

After misting the soil so it is good and damp, we sprinkle the lettuce seeds with our finger-tips trying to have a 100 or so seeds per tofu tub.  Lastly we gently sprinkle a thin lay of cover soil over the seeds and lightly mist to settle the seeds. They must be kept moist but not overly wet or the seeds and starts may rot. Lettuce seed germinates best in a cool soil so don't put it on a heat mat or under a lamp to get it to germinate.

Lettuce seedlings in a tofu container. Using a pen to make holes for transplants.

When the seedlings are about 1/2" - 1" (2 cm) high, they are ready for transplanting. We put ours in regular or "jumbo" six-packs. We use a basic, organic potting soil and add our own fertilizer. To each wheelbarrow of soil we add about two cups of all-purpose organic fertilizer and about a half-gallon of sifted rabbit manure . When germinating tiny seeds (such as lettuce), we sift the soil before adding amendments so the seedlings don't have to push past un-composted bits of bark or wood-chips in the soil. For transplanting, we don't bother to sift the soil.

Transplanting seedlings

For the Sharing Gardens, where we might grow 1,000 or more lettuce plants per season, transplanting is done in large batches. Being systematic in the nursery will save you time and materials and you will have much better results. Have labels ready so you keep track of the varieties you are transplanting. Fill a flat of six-packs and mist it with water and soak the seedlings too. Wet soil is less shocking to transplanted roots than dry. Cupping your hand over the whole tofu-tub of seedlings, flip it over and tap the bottom, catching the whole clump of soil and seedlings in your hand. Gently flip it back over and place it on a tray to catch the loose soil as it drops off.

Seedlings "hardening-off".

Using your finger. a stick or some other object, make a generous hole in each of the cells of the six-packs. Pull off a clump of seedlings and, holding them by their leaves, tease apart a single plant with its roots. On a cool, overcast day you can lay a large number of the seedlings alongside their holes before dropping them in and squeezing the soil around them. If the day is hot or the sun is strong, work in smaller batches so the seedlings don't get shocked. It is very important that all the roots go down into the soil and are covered. If they stick out from the surface, this is called 'J-rooting' and  will often kill the plants as they dry out too easily. This is why you want to dig a generously-sized hole so the rootlets don't catch on the sides as you lower them in. after pressing the soil in around each seedling, water them in gently to settle the soil. Label the tray and move onto the next.

Transplanting peas and lettuce

Depending on warmth and sunlight, and the size of the six-packs you use, your lettuce will be ready to plant in the soil in six to ten weeks. If you stagger your plantings it will mean your lettuce doesn't all come ripe at once. Ideally you wait until the root ball has filled the six-pack cell enough to hold the soil as you pop it out, without being totally root-bound (roots coming through the bottom of the six-pack). A week or two before you transplant into your garden, bring the starts outside and begin "hardening them off". Put them where they will get plenty of sun but not too much wind. They will withstand a light frost but if it is going to get very cold, or doesn't warm up in the day, bring them back into the greenhouse till conditions improve. During this hardening-off period, prepare garden beds so they are ready to receive transplants. In our "deep-mulch/minimal till" gardens, we pull a row of mulch over to the adjacent path (with a pitchfork) and, with a trowel dig a small hole just the size of the lettuce's root-ball. This leaves worm holes intact and lettuce seems to thrive without any roto-tilling needed.

Several weeks after transplanting. Picking individual lettuce leaves for salad.

Here in our area, slugs can be a real problem in the spring. Follow this link for ideas on how to re-use milk cartons or soy-milk containers to thwart off their feasting. Re-Purposing Things We don't find that additional fertilizing is necessary for lettuce plants. They receive enough nutrients from the soil. We hold off on mulching them because we want the sun to warm up and dry out the soil and mulch provides habitat for the slugs. Sometimes, after the lettuce is well established and the soil is warmed up, we mulch with a few inches of grass clippings around our plants. Let the clippings dry out for a few days on a tarp or in a bin. Fresh clippings, if piled thickly, can heat up considerably and burn your plants.

Chris Burns with beautiful lettuce harvest! 2011

We plant our lettuce spaced about 6" - 8" (12 - 15 cm) apart. We harvest them intermittently giving the remaining lettuce room to grow. In the early stages, before the heads are fully formed, we harvest one to three leaves off each plant, rather than clipping whole heads. As the heads become full size we harvest by cutting them off at the root with a paring knife, leaving the roots in the ground to feed the worms.

Fall Crops: Give yourself 45 - 60 days (before hard freezing) to grow your fall crops of lettuce. You can assist your lettuce in germinating if you begin the process in a shaded area so the soil isn't too warm. Once seedlings come up, they will need sunlight to grow but do this outside of the greenhouse so they don't get too hot. Heat triggers the plants to "bolt" (go to seed) even when the plants are very young.

Favorite varieties: Everyone who eats out of our gardens seems to prefer green lettuce to red, or at least to have some green to mix in with the red. (This even includes the bugs who seem to devour the green lettuce much more voraciously!) Our recipients also seem to prefer head lettuce to the "leaf" lettuce. We don't know why this is (maybe just habit...) but we take this into consideration when we plant out our gardens. There are hundreds of varieties of lettuce to choose from. The most popular ones we grew this year were:

Buttercrunch
Chartwell's Romaine
Green and Red Iceberg (home-grown Iceberg lettuce is much more nutritious than store-bought).
Four Seasons (a red Romaine-type lettuce)

Next installment: How to Save Lettuce Seed