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US Plant Patent PP18282

HYMMAD II

Hydrangea macrophylla plant named ‘HYMMAD II’

PUBLIC DOMAIN

Patent expired April 30, 2026. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on February 6, 2026. This patent earned 83 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP18282, the photograph of HYMMAD II printed in the patent.
Figure 1 from US Plant Patent PP18282, reproduced as printed. Photographs in a plant patent are taken by the applicant. Reproduction of the patent document is permitted; the image is shown whole and uncropped for that reason.

The record

Patent number
PP18282
Filed
February 6, 2006
Granted
December 4, 2007
Expires
April 30, 2026
Assignee
UNIV GEORGIA RES FOUND
Inventor
DIRR MICHAEL A

Abstract

Hydrangea macrophylla, ‘Hymmad II’ has multi-rowed pink lacecap inflorescences that maintain the color in the presence and absence of aluminum. Inflorescences mature to a beautiful lime green. The habit is rounded with strong purple-black stems that hold the flowers upright. The lustrous, leathery, bullate, black-green leaves are highly mildew resistant.

Show the legal claimThe single numbered claim as granted — the legal text that defines what this patent covers.

1. A new and distinct variety of Hydrangea macrophylla plant substantially as herein described and illustrated.

Read the full patent: US Plant Patent PP18282 in full — the complete specification, every figure, and the file history.