Plant
Cortaderia
11 US plant patents name this plant. 3 have expired, so those cultivars are free to propagate and sell. 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
Botanically this is Cortaderia. A patent expiring frees the plant, and its cultivar name with it — cultivar names cannot be trademarked. Any brand name it is sold under is a separate thing and may still be owned.