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US Plant Patent PP18823

Blue Heaven

Hydrangea plant named ‘Blue Heaven’

PUBLIC DOMAIN

Patent expired August 29, 2026. This plant is in the public domain — anyone may propagate and sell it.

Twenty years from the filing date would end on August 23, 2026. This patent earned 6 days of term adjustment for delay at the Patent Office, which is why it runs longer.

Figure 1 of US plant patent PP18823, the photograph of Blue Heaven printed in the patent.
Figure 1 from US Plant Patent PP18823, 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
PP18823
Filed
August 23, 2006
Granted
May 20, 2008
Expires
August 29, 2026
Assignee
KLAVEREN ARIE D
Inventor
KLAVEREN ARIE D

Abstract

A new cultivar of Hydrangea macrophylla named ‘Blue Heaven’ that is characterized by its very early spring blooming habit, its ability to re-bloom on new growth after deadheading, its consistently well formed, large sized inflorescences that are red-purple in color (bluer in color depending with alkaline pH and sufficient aluminum levels), its strong flower stems, and its durable thick foliage.

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 Hydrangea plant named ‘Blue Heaven’ substantially as herein illustrated and described.

Read the full patent: US Plant Patent PP18823 in full — the complete specification, every figure, and the file history.