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. (Cauliflower Group) · Cauliflower
Zea mays L. · Maize
Zea mays L. · Maize
Triticum aestivum L. · Bread wheat
Beta vulgaris Garden Beet Group · Garden beet
Solanum lycopersicum L. · Tomato
Lactuca sativa L. · Lettuce
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Phaseolus vulgaris L. · Common bean
Zea mays L. · Maize
Zea mays L. subsp. mays (Maize Group) · Maize
Capsicum annuum L. · Bell pepper
Solanum lycopersicum L. · Tomato
Zea mays L. · Maize
Lactuca sativa L. · Lettuce
Zea mays L. · Maize
Spinacia oleracea L. · Spinach
Raphanus sativus L. var. sativus · Radish
Beta vulgaris Sugar Beet Group · Sugar beet
Brassica oleracea L. (Red Cabbage Group) · Red cabbage
Capsicum annuum L. · Bell pepper
Solanum tuberosum L. · Potato
Solanum lycopersicum L. · Tomato
Zea mays L. · Maize