Plant
Polygonatum
4 US plant patents name this plant. 1 has expired, so that cultivar is free to propagate and sell. The next of the 3 still protected comes off patent on August 2, 2027.
Still under patent — 3 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Double StuffPP19624Polygonatum plant named ‘Double Stuff’UNDER PATENTAugust 2, 2027
- Angel WingPP21543Polygonatum plant named ‘Angel Wing’UNDER PATENTJuly 1, 2029
- Prince CharmingPP22304Polygonatum plant named ‘Prince Charming’UNDER PATENTSeptember 8, 2030
Already in the public domain — 1 cultivar
Most recently freed first. Anyone may propagate and sell this plant — though the name it is sold under may still be a live trademark.
- Kelli's GoldPP15302Polygonatum plant named ‘Kelli's Gold’PUBLIC DOMAINSeptember 27, 2023
Botanically this is Polygonatum. 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.