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.
Solanum lycopersicum L. · Tomato
Spinacia oleracea L. · Spinach
Linum usitatissimum L. · Common flax
Brassica oleracea L. (Red Cabbage Group) · Red cabbage
Pisum sativum L. · Pea
Brassica oleracea L. (White Cabbage Group) · White cabbage
Spinacia oleracea L. · Spinach
Poa pratensis L. · Kentucky bluegrass
Solanum lycopersicum L. · Tomato
Phaseolus vulgaris L. · Common bean
Solanum lycopersicum L. · Tomato
Pisum sativum L. · Pea
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Brassica oleracea L. (White Cabbage Group) · White cabbage
Brassica oleracea L. (White Cabbage Group) · White cabbage
Solanum lycopersicum L. · Tomato
Daucus carota L. · Carrot
Lactuca sativa L. · Lettuce
Phleum pratense L. · Timothy grass
Lolium perenne L. · Perennial ryegrass
Daucus carota L. · Carrot
Brassica oleracea L. (White Cabbage Group) · White cabbage
Lactuca sativa L. · Lettuce
Brassica oleracea L. (White Cabbage Group) · White cabbage