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TCCL Seed Library: Seeds

An open and circulating collection of heirloom garden seeds

Seed Saving Difficulty Levels

TCCL Seed Library divides seeds into three levels of seed saving diffciulty: Easy, Medium, and Advanced.  

Easy seeds are self-pollinating and require no special isolation techniques.  That is, they pollinate themselves with minimal crossing from wind or insects.  Easy seeds are perfect for beginning seed savers.

Medium seeds may require some isolation techniques or  be biennial.  Medium seeds are fun for intermediate seed savers.

Advanced seeds require careful isolation through time, distance, and mechanical means.  Flowers may need to be kept closed and hand-pollinated, or the plants may require isolation distances much larger than the average home garden.  

Renewing America's Food Traditions

Advanced

These plants are insect or wind-pollinated and cross with other varieties, so to get true seed separate varieties by time, distance, or physical barriers like paper bags.

Broccoli

Cabbage

Corn

Carrot

Kale

Melons

Okra

Radish

Squashes

Swiss Chard

Seed to Seed

The Manual of Seed Saving

Easy to Save

These plants generally self-pollinate, so you don't have to worry about out-crossing, and make seeds in one season. Just let them ripen fully and dry completely, label and store.

Beans

Peas

Lettuce

Eggplant

Tomato

*Tomato and pepper seeds have a thin coating that inhibits germination.  Fermenting that coating off will make the seeds more successful. 

Medium Difficulty

These plants may self-pollinate or cross-pollinate and should be separated from other varieties by distance.  Some are Biennial and take two years to produce seeds.

Arugula

Basil

Cilantro

Chives

Nasturtium

Pepper

Garden Seed Inventory