US Plant Patent PP33366
Evening Rose
Hibiscus plant named ‘Evening Rose’
UNDER PATENT
Still under patent. Protection ends January 22, 2040.
Twenty years from the filing date would end on November 8, 2039. This patent earned 75 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP33366
- Filed
- November 8, 2019
- Granted
- August 17, 2021
- Expires
- January 22, 2040
- Assignee
- WALTERS GARDENS INC, HANSEN HANS A
- Inventor
- HANSEN HANS A
Abstract
A new and distinct cultivar of winter-hardy, herbaceous, perennial, hybrid Hibiscus plant named ‘Evening Rose’ comprising an upright, rounded, compact, mound habit of multiple, well-branched, mostly upright basal stems producing flowers from the bottom to the top of the plant for at least six weeks beginning mid-summer. Flowers have petals vivid purplish-red with deep red veins radiating to the margin and moderate red shiny eye surrounded by deep dark-red band set off with a deep red and white striped column displaying yellow-colored pollen. The foliage is mainly tri-lobed with burgundy color.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new cultivar of hardy herbaceous perennial Hibiscus hybrid plant named ‘Evening Rose’ as herein illustrated and described.
Read the full patent: US Plant Patent PP33366 in full — the complete specification, every figure, and the file history.