US Plant Patent PP19580
Acrade
Monarda plant named ‘Acrade’
UNDER PATENT
Still under patent. Protection ends April 11, 2027.
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
- PP19580
- Filed
- April 11, 2007
- Granted
- December 16, 2008
- Expires
- April 11, 2027
- Assignee
- CANADA NATURAL RESOURCES
- Inventor
- DAVIDSON CAMPBELL G
Abstract
A new cultivar of bee balm, Monarda didyma ‘ACrade’, characterized by its purple-violet blossoms that are present abundantly in June through August. The new variety is mid sized in height with a mounded plant habit, is hardy in U.S.D.A. Zones 3 to 8, and exhibits dark green slightly glossy foliage that has shown resistant to powdery mildew.
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 Monarda plant named ‘ACrade’ as herein illustrated and described.
Read the full patent: US Plant Patent PP19580 in full — the complete specification, every figure, and the file history.