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
Brassica oleracea L. (White Cabbage Group) · White cabbage
Triticum aestivum L. · Bread wheat
Sinapis alba L. · White mustard
Daucus carota L. · Carrot
Solanum lycopersicum L. · Tomato
Cucumis sativus L. · Cucumber
Festuca rubra L. · Red fescue
Cucumis sativus L. · Cucumber
Glycine max (L.) Merr. · Soybean
Helianthus annuus L. · Sunflower
Lactuca sativa L. · Lettuce
Daucus carota L. · Carrot
Brassica oleracea L. (Kale Group) · Kale
Festuca pratensis Huds. · Meadow fescue
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
Apium graveolens L. var. rapaceum (Mill.) Gaud. · Celeriac
Allium cepa L. var. cepa · Onion
Helianthus annuus L. · Sunflower
Cucumis sativus L. · Cucumber
Allium porrum L. · Leek
Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage
Phleum pratense L. · Timothy grass
Raphanus sativus L. var. oleiformis Pers. · Oil radish