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
Trifolium repens L. · White clover
Beta vulgaris Sugar Beet Group · Sugar beet
Daucus carota L. · Carrot
Pisum sativum L. · Pea
Syngenta Seeds B.V.
Chrysanthemum L. · Chrysanthemum
MR. WILLIAM E. DUFFETT
Hordeum vulgare L. · Barley
Svalof Weibull AB
Chrysanthemum L. · Chrysanthemum
WILLIAM E DUFFETT
Chrysanthemum L. · Chrysanthemum
MACK GRACE H.
Chrysanthemum L. · Chrysanthemum
MACK GRACE H. / VANDENBERG CORNELIS P.
Chrysanthemum L. · Chrysanthemum
MACK GRACE H.
Capsicum annuum L. · Bell pepper
ZERAIM GEDERA
Chrysanthemum L. · Chrysanthemum
WILLIAM E DUFFETT
Chrysanthemum L. · Chrysanthemum
Fides Goldstock Breeding
Chrysanthemum L. · Chrysanthemum
Knaap, Jacques C. M. van der|DeLier, Netherlands
Zea mays L. · Maize
Dow AgroSciences VertriebsgmbH
Festuca rubra L. · Red fescue
Alicja Ramenda
Spinacia oleracea L. · Spinach
Syngenta Seeds BV (NL)
Zea mays L. subsp. mays (Maize Group) · Maize
SICA L. G. SERVICES (FR)
Solanum lycopersicum L. · Tomato
Harris Moran Seed Company
Cucumis melo L. · Melon
Chrysanthemum L. · Chrysanthemum
VAN DER JAGT MARTINUS
Chrysanthemum L. · Chrysanthemum
MR. WILLIAM E. DUFFETT
Chrysanthemum L. · Chrysanthemum
Knaap, J. V. D.