US Plant Patent PP17768
KF1-1
Interspecific hybrid Dogwood Tree designated ‘KF1-1’
PUBLIC DOMAIN
Patent expired August 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
- PP17768
- Filed
- August 1, 2005
- Granted
- May 29, 2007
- Expires
- August 1, 2025
- Assignee
- RUTGERS THE STATE UNIVERSTIY
- Inventor
- ORTON ELWIN R; GANT DAVID A
Abstract
An F 1 interspecific hybrid of Cornus kousa×C. florida that is distinguished by its large bracts, a compact and dense attitude, wider than tall, and a flowering habit in the middle of the blooming season for the commercially available cultivars of Cornus kousa×C. florida. The cultivar has a high level of winter hardiness, and is highly resistant to dogwood anthracnose and the common dogwood borer.
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 dogwood tree comprising an F 1 interspecific hybrid of Cornus kousa×C. florida substantially as herein shown and described.
Read the full patent: US Plant Patent PP17768 in full — the complete specification, every figure, and the file history.