US Plant Patent PP17934
Citronelle
Heuchera plant named ‘Citronelle’
PUBLIC DOMAIN
Patent expired December 1, 2025. This plant is in the public domain — anyone may propagate and sell it.
No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

The record
- Patent number
- PP17934
- Filed
- December 1, 2005
- Granted
- August 21, 2007
- Expires
- December 1, 2025
- Assignee
- DELABROYE SANDRINE
- Inventor
- DELABROYE SANDRINE
Abstract
A new cultivar of Heuchera villosa, ‘Citronelle’, a sport of Heuchera villosa ‘Caramel’, characterized by its uniquely colored yellow-green foliage, its cordate-shaped leaves on rosy red petioles, its vigorous growth habit and its resistance to disease.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
1. A new and distinct cultivar of Heuchera plant named ‘Citronelle’ as herein illustrated and described.
Read the full patent: US Plant Patent PP17934 in full — the complete specification, every figure, and the file history.