Public domain
Plant breeders' rights are granted for a limited term. Upon expiration, the variety enters the public domain: its seeds can be propagated and sold without the rights holder's license.
Recent years are the most sought-after: the variety is free to use but still in production.
Brassica oleracea L. (Kohlrabi Group) · Kohlrabi
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Brassica napus var. napus · Rapeseed
Brassica oleracea L. (Kohlrabi Group) · Kohlrabi
Daucus carota L. · Carrot
Carum carvi L. · Caraway
Brassica napus var. napus · Rapeseed
Pisum sativum L. · Pea
Lactuca sativa L. · Lettuce
Brassica oleracea L. (Kale Group) · Kale
Phaseolus vulgaris L. · Common bean
Brassica oleracea L. (White Cabbage Group) · White cabbage
Brassica oleracea L. (White Cabbage Group) · White cabbage
Pisum sativum L. · Pea
Brassica oleracea L. (Red Cabbage Group) · Red cabbage
Brassica oleracea L. (White Cabbage Group) · White cabbage
Hordeum vulgare L. · Barley
Helianthus annuus L. · Sunflower
Hordeum vulgare L. · Barley
Cucumis melo L. · Melon
Lactuca sativa L. · Lettuce
Cucumis sativus L. · Cucumber
Helianthus annuus L. · Sunflower
Daucus carota L. · Carrot