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. (White Cabbage Group) · White cabbage
Brassica oleracea L. (White Cabbage Group) · White cabbage
Solanum melongena L. · Eggplant
GOLDEN WEST SEED RESEARCH Co.
Nicotiana tabacum L. · Tobacco
HAO-DEMETER Cotton and Industrial Crops Institute
Pisum sativum L. · Pea
SLUIS & GROOT BV (NL)
Cucumis melo L. · Melon
Golden West Seed Co.
Zea mays L. subsp. mays (Maize Group) · Maize
KWS Saat AG, DE
Beta vulgaris Sugar Beet Group · Sugar beet
Breeding Division of Hellenic Sugar Industry
Dianthus caryophyllus L. · Carnation
S.KLEMM
Dianthus caryophyllus L. · Carnation
S.KLEMM
Dianthus caryophyllus L. · Carnation
Siegfried Klemm
Dianthus L. · Carnation
Siegfried KLEMM (DE)
Solanum lycopersicum L. · Tomato
HOLLAR SEED CO.
Dianthus caryophyllus L. · Carnation
Siegfried Klemm
Nicotiana tabacum L. · Tobacco
HAO-DEMETER Cotton and Industrial Crops Institute
Rosa L. · Rose
HETZEL| Karl Hetzel (+)
Dianthus L. · Carnation
Siegfried KLEMM (DE)
Dianthus caryophyllus L. · Carnation
Siegfried Klemm
Dianthus caryophyllus L. · Carnation
S.KLEMM
Euphorbia pulcherrima Willd. ex Klotzsch · Poinsettia
KLEMM SIEGFRIED
Dianthus caryophyllus L. · Carnation
S.KLEMM
Dianthus caryophyllus L. · Carnation
Siegfried Klemm
Pelargonium L'Hér. ex Ait. · Geranium
Siegfried KLEMM (DE)
Dianthus L. · Carnation
Siegfried KLEMM (DE)