Nursery or breeding house
UNIV PENNSYLVANIA
3 US plant patents, granted between 1994 and 2014.
Still under patent — 1 cultivar
Soonest to come off patent first. You may not propagate these for sale until the date shown.
- Chestnut HillPP24880Prunus plant named ‘Chestnut Hill’UNDER PATENTNovember 1, 2032
Already in the public domain — 2 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.
- MeitraviaPP16890Hybrid tea rose plant named ‘Meitravia’PUBLIC DOMAINMarch 17, 2025
- J. L. PennockPP8901Enkianthus perulatus cv. `J. L. Pennock`PUBLIC DOMAINAugust 3, 2013