US Plant Patent PP23634
Grace
Hydrangea plant named ‘Grace’
UNDER PATENT
Still under patent. Protection ends January 5, 2031.
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
- PP23634
- Filed
- January 5, 2011
- Granted
- May 28, 2013
- Expires
- January 5, 2031
- Assignee
- BAY CITY FLOWER CO, HIGAKI HARRISON M
- Inventor
- HIGAKI HARRISON M
Abstract
A new and distinct cultivar of Hydrangea macrophylla (Thunb.) named ‘Grace’ originated as a controlled cross between unpatented varieties. The cultivar ‘Grace’ can be blue or red depending on the acidity of the soil and the presence of aluminum, but is preferably grown as a red variety. The variety ‘Grace’ has large attractive inflorescences with large sepalous florets, distinct sepal pigmentation and good tolerance to cold temperatures. The upperside of the sepals is R.H.S. 63 A (red-purple group), the underside of the sepals is R.H.S. 63 D (red-purple group)
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinct Hydrangea macrophylla plant named ‘Grace’ substantially as herein shown and described.
Read the full patent: US Plant Patent PP23634 in full — the complete specification, every figure, and the file history.