One Seed, Many Seasons: How to Grow a Garden That Endures

This is an extraordinary week on the calendar. Today is Easter for Western Christians (Orthodox Pascha follows next Sunday). We’re in the middle of Passover. Ramadan recently ended with Eid al-Fitr. April is also Earth Month, leading up to Earth Day on the 22nd. Whether you observe any of these or simply enjoy a long weekend, the common thread is spring for Earth’s northern hemisphere—and the ancient human impulse to put things in the ground and help them grow.

Speaking of growing, Sustainable Practice will be growing our library of resources with our 2026 edition of Your Earth Share: Seven Pathways to Sustainable Living, available later this month. For more information about other changes we’ll be announcing soon, visit our website www.SustainablePractice.Life. We’re glad to have you with us as we help sustainable practitioners like you expand your positive impact on Earth. Now on to planting seeds.

At F.W. Horch Sustainable Goods & Supplies, my sustainable living store in Brunswick, Maine, my colleague Brett Thompson used to tell our customers that a calendar is the most important gardening tool. He had a point: there’s nothing more important in gardening than planning ahead. If you want to save seeds this fall—so you can skip buying them next year, or swap them with friends and neighbors—the time to put that plan into action happens right now, when you’re deciding what to plant.

You can’t save all seeds. Some grow true to type year after year. Others won’t, no matter what you do. This week’s step is to understand the difference and to start buying seeds you can save, so your garden becomes better and better adapted to your “micro-climate” growing conditions, season after season.

Open-Pollinated, Heirloom, and Hybrid

Pollination, the combination of pollen from the male anther to the female stigma of a flower, creates seeds that can grow into plants. Open-pollinated plants are pollinated naturally by wind, insects, birds, or water, rather than through human-controlled breeding. An open-pollinated variety that is pollinated by the same variety produces offspring with the same characteristics as the parent (for self-pollinating plants that can fertilize seeds with their own pollen) or parents (for plants that require pollen from a different plant). Grow a Cherokee Purple tomato, save its seeds, plant them next spring, and you get Cherokee Purple tomatoes again. The genetics stay stable because they’ve been maintained through natural pollination—wind, insects, or the plant’s own flower structure—over many generations.

Heirloom seeds are open-pollinated varieties that have been saved and passed down by gardeners and farming communities, typically for fifty years or more. All heirlooms are open-pollinated, but not all open-pollinated varieties are heirlooms. Newer varieties bred through traditional methods are just as saveable.

A hybrid (labeled “F1” in seed catalogs) is a cross between two distinct parent varieties, bred for specific traits—disease resistance, uniform size, higher yields, and earlier maturity. The first generation often performs well. But save the seeds and plant them, and you won’t get the same plant back. The offspring revert unpredictably, so to grow that hybrid again, you have to buy new seed.

Hybrids aren’t bad—they have real advantages, especially for beginners or tight spaces. But you can’t save seed from them and get reliable results. If seed saving is your goal, plant open-pollinated or heirloom varieties. That choice happens now, not in September when the tomatoes are ripe.

Why This Matters Beyond Your Garden

Seed saving sits on the Food pathway in the Sustainable Practice framework—the practices focused on sustainable eating, growing, and food systems. It also connects to the Community pathway, which is about growing networks of people practicing sustainability together.

There’s a reason this article falls during a week dense with religious observance. Seeds and faith have always been intertwined. The Passover seder plate holds parsley for spring renewal and bitter herbs whose varieties differ from one Jewish community to the next—Ashkenazi families reach for horseradish, Sephardic families for endive or romaine, each carrying a specific culinary tradition across centuries and continents. Easter tables from Appalachia to Greece feature breads, greens, and cured meats tied to what people have grown locally for generations. Ramadan iftar meals vary by region in ways that reflect centuries of local agriculture.

Even a backyard gardener with no religious affiliation is participating in this same deep pattern: choosing what to grow, tending it, saving the seed, and handing it to someone else. Heirloom varieties carry that history in their names—Mortgage Lifter, from a West Virginia gardener who sold enough tomato plants to pay off his house in the 1940s; Dragon Tongue, a Dutch bean with a lineage older than our country. When you save seed, you’re spinning a thread that other hands started long ago.

According to the Food and Agriculture Organization of the United Nations, more than 90 percent of crop varieties have disappeared from farmers’ fields over the past century, replaced by a narrow set of commercial ones. A 2021 study in Frontiers in Sustainable Food Systems found that vegetable variety diversity is declining globally at 1 to 2 percent per year, while hybrid seeds market share grows by 8 to 10 percent annually. Every home gardener who saves open-pollinated seed wades against that current.

Your One Step This Week: Choose Saveable Seeds

If you haven’t ordered seeds yet (or even if you have), look at what you’re planting this season. Check the packet or catalog for the words “open-pollinated,” “heirloom,” or “OP.” Steer clear of anything labeled “F1” or “hybrid” for the varieties you intend to save.

Some crops make seed saving dead simple because they self-pollinate—the flower fertilizes itself, so there’s almost no risk of unwanted crosses. Tomatoes, peppers, peas, beans, and lettuce all work this way. Grow multiple varieties side by side and save clean seed from each one. By selecting seed from the plants that produce the best for you (whether you’re after flavor, color, size, or dependability), over the years you’ll develop your own varieties that you can pass down to future generations who take over the garden you’ve started.

Other crops—squash, corn, beets, and members of the cabbage family—are cross-pollinated by wind or insects, so different varieties of the same species can mix. To save pure seed from these, grow only one variety per species, or separate them by enough distance to prevent crossing. The Seed Savers Exchange publishes a free crop-by-crop seed saving chart with isolation distances and instructions for dozens of vegetables.

The mechanics are not complicated. Let your best plants mature fully (past the eating stage, in many cases), harvest the seeds, dry them thoroughly, and store them in a cool, dry place. Tomato seeds need a brief fermentation in water to strip the gel coating. Bean and pea seeds dry on the plant until the pods go papery. Lettuce bolts and produces fluffy seed heads that you shake into a bag.

Not Everything Grows from Seed

Apple trees don’t come from seed—plant one and the fruit will taste nothing like the apple you ate. That’s why apples are propagated by grafting a cutting (a branch from a fruit-bearing tree) onto hardy rootstock (the roots and trunk of a compatible tree that develops a strong and sturdy root system). Grapes, figs, blueberries, raspberries, rosemary, sage, and lavender are also grown from cuttings or divisions, not seed. A cutting shared over a neighbor’s fence is its own form of seed saving—and the Community pathway in action.

Where to Find Seeds and Community

Seed libraries have spread through public libraries across the country—more than 450 exist worldwide, many focusing on heirloom varieties adapted to local conditions. Check your local library or search the Community Seed Network to find one near you.

For purchasing open-pollinated seed, Seed Savers Exchange, Southern Exposure Seed Exchange, High Mowing Organic Seeds, and Baker Creek Heirloom Seeds all specialize in varieties you can save from. Fedco Seeds, based in our state of Maine, is another excellent source. All clearly label which seeds are open-pollinated and which are hybrid.

Look at your seed packets this week. Swap out a hybrid or two for an open-pollinated alternative. Mark your calendar for the end of the season, when you’ll harvest not just food but the start of next year’s garden.

For more on the Food and Community pathways—including practices for gardening, composting, and building local sustainability networks—visit www.suspra.com or pick up the Sustainable Practices Handbook. Our March 2025 article on soil blocking for seed starting and last week’s piece on no-till gardening pair well with this one. You’ll find the full archive at SustainablePractice.Life.

References and Resources

Research

Food and Agriculture Organization of the United Nations. “What is Agrobiodiversity?” https://www.fao.org/4/y5609e/y5609e02.htm

Ficiciyan, A.M., Loos, J., & Tscharntke, T. (2021). “Similar Yield Benefits of Hybrid, Conventional, and Organic Tomato and Sweet Pepper Varieties Under Well-Watered and Drought-Stressed Conditions.” Frontiers in Sustainable Food Systems, 5, 628537. https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2021.628537/full

Khoury, C.K., et al. (2022). “Crop genetic erosion: understanding and responding to loss of crop diversity.” New Phytologist, 233(1), 84–118. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.17733

Practical Resources

Seed Savers Exchange — Seed Saving Basics and Crop-by-Crop Guide: https://www.seedsavers.org/seed-saving-chart

Community Seed Network — Find a Seed Library Near You: https://www.communityseednetwork.org/

University of Illinois Extension — “Open-Pollinated vs. Hybrid: An Important Distinction When Saving Seeds”: https://extension.illinois.edu/blogs/good-growing/2025-10-10-open-pollinated-vs-hybrid-important-distinction-when-saving-seeds

Southern Exposure Seed Exchange — “What’s In a Seed: Open-Pollinated vs. Hybrid vs. GM”: https://blog.southernexposure.com/2022/04/whats-in-a-seed-open-pollinated-vs-hybrid-vs-gm/

More Resources for Sustainable Practitioners

Sustainable Practice at www.sustainablepractice.life and www.suspra.com.