Plant
Amsonia
4 US plant patents name this plant. 0 have expired, so those cultivars are free to propagate and sell. The next of the 4 still protected comes off patent on January 15, 2040.
Still under patent — 4 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- StarstruckPP32246Amsonia plant named ‘Starstruck’UNDER PATENTJanuary 15, 2040
- Verdant VenturePP33415Amsonia plant named ‘Verdant Venture’UNDER PATENTDecember 15, 2040
- String TheoryPP34419Amsonia plant named ‘String Theory’UNDER PATENTNovember 29, 2041
- Blue BehemothPP35930Amsonia plant named ‘Blue Behemoth’UNDER PATENTSeptember 28, 2043
Botanically this is Amsonia. 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.