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.
Lolium perenne L. · Perennial ryegrass
Zelder B.V.
Spinacia oleracea L. · Spinach
L. DÆHNFELDT A/S
Chrysanthemum L. · Chrysanthemum
Meek, Jack M.|Salinas, CA / Duffett, William E.|Salinas, CA
Triticum aestivum L. · Bread wheat
Nickerson Seeds Ltd (GB)/Nickerson SA (FR)
Rosa L. · Rose
WERNER NOACK
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG, CH
Pisum sativum L. · Pea
Selgen a.s., CZ
Beta vulgaris Sugar Beet Group · Sugar beet
SESVANDERHAVENV
Pisum sativum L. · Pea
WAVEREN| van Waveren Saaten GmbH
Glycine max (L.) Merr. · Soybean
First Line Seeds Ltd (CA)
Oryza sativa L. · Rice
Golden West Seed Co.
Pisum sativum L. · Pea
ZAADUNIE BV (NL)
Pisum sativum L. · Pea
Knosel Karl (DE)
Triticum durum Desf. · Durum wheat
Ets Claude Camille Benoist SA (FR)
Cucumis sativus L. · Cucumber
HAZERA (1939)
Triticum durum Desf. · Durum wheat
ARIZONA PLANT BREEDERS
Medicago sativa L. · Alfalfa
GOLDEN WEST SEED RESEARCH Co.
Beta vulgaris Sugar Beet Group · Sugar beet
FLORIMOND DESPREZ VEUVE ET FILS
Daucus carota L. · Carrot
Bejo Zaden (NL)
Begonia L. · Begonia
L. DÆHNFELDT A/S
Saintpaulia ionantha H. Wendl. · African violet
OPTIMARA ERFINDERGEMEINSCHAFT, GEBR. HOLTKAMP
Helianthus annuus L. · Sunflower
INTERDOR, FR
Chrysanthemum L. · Chrysanthemum
Knaap, Jacques C. M. van der|DeLier, Netherlands
Brassica napus var. napus · Rapeseed
Svalof Weibull AB