Breeder
KOLSTER HENNY
3 US plant patents, granted between 2007 and 2014.
Filed under the KOLSTER name. Related entities are listed separately on the KOLSTER search, because a company and a person are not the same filer even when the name matches.
Still under patent — 2 cultivars
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Old FashionedPP19035Cotinus plant named ‘Old Fashioned’UNDER PATENTDecember 22, 2026
- EVENING LIGHTPP24168Styrax plant named ‘EVENING LIGHT’UNDER PATENTJune 19, 2032
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.
- CORAL SUNPP17409Koelreuteria plant named ‘CORAL SUN’PUBLIC DOMAINAugust 18, 2025