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.
Linum usitatissimum L. · Common flax
DALGETY| Dalgety Arable Limited
Trifolium incarnatum L. · Crimson clover
The New Zealand Pastoral Agriculture Research Institute Limited
Pisum sativum L. · Pea
Serasem, FR
Triticum aestivum L. · Bread wheat
TWYFORD SEEDS LTD
Solanum lycopersicum L. · Tomato
Seminis Vegetable Seeds
Hordeum vulgare L. · Barley
W WEIBULL
Begonia x hiemalis Fotsch · Elatior Begonia
LUBBERTUS H.KOPPE
Brassica oleracea L. (White Cabbage Group) · White cabbage
ROYAL SLUIS
Beta vulgaris Sugar Beet Group · Sugar beet
KWS Saat AG, DE
Daucus carota L. · Carrot
Societa' Agricola Italiana Sementi -S.A.I.S S.p.a-
Zea mays L. subsp. mays (Maize Group) · Maize
RAGT 2n
Hordeum vulgare L. · Barley
Ministere de I' Agriculture I. N. R. A. (FR)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
BARENBRUG HOLLAND
Lolium multiflorum Lam. · Italian ryegrass
Theodorus P.M. op den Kamp
Poa pratensis L. · Kentucky bluegrass
Barenbrug Holland BV (NL)
Poa pratensis L. · Kentucky bluegrass
Barenbrug Holland BV, 6501 BH Nijmegen
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Harris Moran Seed Company
Hordeum vulgare L. · Barley
SECOBRA SAATZUCHT| SECOBRA Saatzucht GmbH
Lilium L. · Lily
Vletter, Floris|Rijnsburg, Netherlands
Rosa L. · Rose
David J.C.Austin
Rosa L. · Rose
David C H Austin (GB)/Patricia J Austin (GB)
Avena sativa L. · Oat
Selgen
Solanum tuberosum L. · Potato
RAGIS KARTOFFELZUCHT
Avena sativa L. · Oat
Zelder BV (NL)