Genus
Cortaderia
11 US plant patents have been granted in this genus. 3 are already in the public domain — anyone may propagate and sell them. The next of the 8 still protected comes off patent on November 14, 2026.
Still under patent — 8 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Silver StarPP18890Cortaderia plant named ‘Silver Star ’UNDER PATENTNovember 14, 2026
- AmcoPP19417Cortaderia plant named ‘Amco’UNDER PATENTFebruary 6, 2027
- Scarlet WonderPP19015Cortaderia plant named ‘Scarlet Wonder’UNDER PATENTFebruary 14, 2027
- golden goblinPP21239Cortaderia plant named ‘golden goblin’UNDER PATENTMarch 27, 2029
- Blue BayouPP25937Cortaderia plant named ‘Blue Bayou’UNDER PATENTApril 15, 2034
- Day10PP36606Cortaderia plant named ‘Day10’UNDER PATENTOctober 11, 2044
- Day20PP36993Cortaderia plant named ‘Day20’UNDER PATENTOctober 11, 2044
- Day3PP36831Cortaderia plant named ‘Day3’UNDER PATENTFebruary 8, 2045
Already in the public domain — 3 cultivars
Most recently freed first. Anyone may propagate and sell these plants — though the name it is sold under may still be a live trademark.
- EvitaPP18312Cortaderia plant named ‘Evita’PUBLIC DOMAINMay 18, 2026
- SPLENDID STARPP16277Cortaderia plant named ‘SPLENDID STAR’PUBLIC DOMAINNovember 12, 2024
- MonvinPP5136Cortaderia `Monvin`PUBLIC DOMAINJanuary 21, 2002
A patent expiring frees the plant, and its cultivar name comes with it — cultivar names cannot be trademarked, so they are always free to use. What it does not free is any brand name the plant is marketed under. Those are trademarks and renew indefinitely.