US Plant Patent PP14348
Vulcan
Plant named Hibiscus ‘Vulcan’
PUBLIC DOMAIN
Patent expired February 28, 2020. 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
- PP14348
- Filed
- February 28, 2000
- Granted
- December 9, 2003
- Expires
- February 28, 2020
- Inventor
- WINTERS HAROLD F
Abstract
An herbaceous perennial Hibiscus plant named ‘Vulcan’, of hybrid background, bearing numerous, large, partially sterile flowers of red-purple that remain expanded for at least one full day, and, with strong upright stems that resist lodging and bear large, lobed leaves basally and entire upper leaves of a medium green color. The plants are of ornamental value for the flowers and as plants for landscape plantings. The flowering period extends from mid-summer until frost.
Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.
I claim: 1. A new and distinctive cultivar of Rosemallow Hibiscus plant named ‘Vulcan’, substantially as herein shown and described, having dark reddish purple flowers of unusually large size and lasting qualities unusaul for these plants, a plant suitable for lanscape use with showy flowers that blooms from midsummer until frost in the fall.
Read the full patent: US Plant Patent PP14348 in full — the complete specification, every figure, and the file history.