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.
Zea mays L. · Maize
Gossypium hirsutum L. · Upland cotton
RICHARD LESKE
Capsicum annuum L. · Bell pepper
Poa pratensis L. · Kentucky bluegrass
Zea mays L. subsp. mays (Maize Group) · Maize
Zea mays L. · Maize
Eckhard Holzhausen
Zea mays L. subsp. mays (Maize Group) · Maize
DEKALB PLANT GENETICS
Zea mays L. subsp. mays (Maize Group) · Maize
GIE Sockalb (FR)
Lolium perenne L. · Perennial ryegrass
Cannabis sativa L. · Hemp
Rosa L. · Rose
Stanley G. MARCIEL (US)
Lactuca sativa L. · Lettuce
Cucumis sativus L. · Cucumber
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Cannabis sativa L. · Hemp
Cucumis sativus L. · Cucumber
Cucumis sativus L. · Cucumber
Capsicum annuum L. · Bell pepper
Daucus carota L. · Carrot
Helianthus annuus L. · Sunflower
Trifolium repens L. · White clover
Solanum lycopersicum L. · Tomato