US Plant Patent PP32036
Dark Mystery
Hibiscus plant named ‘Dark Mystery’
UNDER PATENT
Still under patent. Protection ends March 28, 2039.
Twenty years from the filing date would end on March 26, 2039. This patent earned 2 days of term adjustment for delay at the Patent Office, which is why it runs longer.

The record
- Patent number
- PP32036
- Filed
- March 26, 2019
- Granted
- August 4, 2020
- Expires
- March 28, 2039
- 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 ‘Dark Mystery’ comprising a rounded mound habit of multiple, well-branched, basal stems producing flowers from the bottom to the top of the plant for five to six weeks from late July to early September. Flowers have petals of pale pink to light pink with strong reddish veins radiating toward margin and dark, red, shiny eye set off with column of cream-colored pollen. The foliage is cordate to ovate and deep mahogany-colored.
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 ‘Dark Mystery’ as herein illustrated and described.
Read the full patent: US Plant Patent PP32036 in full — the complete specification, every figure, and the file history.