Heirloom Seeds: Buy Early, Save, Store

The short answer: buy your seed in winter, well before planting time. Choose open-pollinated varieties for anything you want to save. And start saving with the easy crops: tomatoes, peppers, beans and peas.

Everything below comes from the University of Minnesota Extension's guide to saving vegetable seeds, reviewed by the university in 2024.

Open-pollinated or hybrid: what is the difference?

Open-pollinated varieties set seed that grows into plants very similar to the parent, with similar fruit. Heirlooms are open-pollinated varieties passed down through generations, but open-pollinated also includes newer selections.

Hybrids are crosses between two different varieties. Sometimes the combination is exceptional, with outstanding vigor, disease resistance and productivity. Hybrid seed usually costs more, because it costs more to produce. Seed saved from a hybrid will sprout, but the plants are not identical to the parent. Extension calls the result impossible to predict.

So the rule for a preparedness garden is not "hybrids bad." Grow a hybrid if it does well for you. Just do not count on saving its seed. For the seed you plan to save, grow open-pollinated.

Examples Extension lists as open-pollinated, which come true from seed:

• Tomatoes: 'Brandywine', 'San Marzano', 'Big Rainbow'
• Peppers: 'California Wonder', 'Habanero', 'Corno di Toro'
• Peas: 'Little Marvel', 'Lincoln', 'Perfection'
• Beans: 'Kentucky Wonder', 'Blue Lake', 'Tendercrop'

And familiar hybrids whose saved seed will not come true: 'Big Boy', 'Beefmaster' and 'Early Girl' tomatoes.

Which crops should you save first?

• Easiest: tomatoes, peppers, beans and peas. Their flowers pollinate themselves, and their seeds need little or no special treatment before storage.
• Harder: carrots and beets. They are biennials, so the plants need two growing seasons to set seed.
• Tricky: corn and vine crops. Corn crosses on the wind; Extension's example is popcorn from a nearby garden pollinating sweet corn on a windy day. That changes the flavor of this year's sweet corn, and seed from it grows neither good sweet corn nor good popcorn. Insects cross cucumbers, melons, squash, pumpkins and gourds, so seed from those crosses grows fruit unlike the parent.

Save seed from your best plants, the healthiest and best-tasting. Skip weak or off-type plants.

How do you harvest the seed?

• Tomatoes. Let the fruit ripen fully. Scoop the seeds and gel into a glass jar with some water, and swirl it twice a day. It will ferment, and the seeds should sink to the bottom within five days. Pour off the liquid, rinse, and dry the seeds on paper towels.
• Peppers. Leave some fruit on the plant until it is fully ripe and starts to wrinkle. Remove the seeds and spread them out to dry.
• Beans and peas. Let the pods dry on the plant until they turn brown and the seeds rattle. That can be a month past normal eating harvest. Dry the pods indoors at least two weeks before shelling, or leave the seeds in the pods until planting time.

How do you store seed so it grows next year?

• Keep seed dry and cool. Extension puts the ideal between 32 and 41°F, so your refrigerator is a good place.
• Add a small packet of silica-gel desiccant to each container. Or wrap one to two tablespoons of powdered milk from a freshly opened package in cheesecloth or a tissue; it absorbs moisture for about six months.
• Label every packet with the crop, the variety and the date you collected it.
• Use saved seed within one year. The older the seed, the lower its germination and vigor.

A one-year seed plan

• Winter: take inventory and order open-pollinated seed for the crops you will save.
• Spring: plant, and mark your strongest plants.
• Late summer: harvest seed from the marked plants.
• Fall: dry, label and refrigerate with a desiccant.

A garden does not replace a pantry; it extends one. Pair this plan with Diesel, Food Prices, and Your Pantry and the 30-day emergency food supply guide. For the bigger homestead picture, read When Crisis Hits: Spiritual Anchor and Practical Power for Your Homestead.

What's changed since March (updated October 2026)

This brief first ran on March 28, 2026, as "Heirloom Seed Availability Tightening for 2026." It reported backorders at heirloom seed suppliers and cited a seed seller's website. We cannot verify those spring backorders now, and a seller is not a neutral source, so we removed the claim. The original also said open-pollinated seed "beats hybrids every time." That overstated it: hybrids can be excellent to grow, they just do not come true from saved seed. The page is rewritten around University of Minnesota Extension guidance.