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The Patent Garden

US Plant Patent PP35416

HoldenRhodo221

Rhododendron plant named ‘HoldenRhodo221’

UNDER PATENT

Still under patent. Protection ends February 9, 2043.

No term adjustment or disclaimer is recorded against this patent, so this is the full statutory term — twenty years from the filing date.

Figure 1 of US plant patent PP35416, the photograph of HoldenRhodo221 printed in the patent.
Figure 1 from US Plant Patent PP35416, 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
PP35416
Filed
February 9, 2023
Granted
October 10, 2023
Expires
February 9, 2043
Assignee
Holden Forests and Gardens
Inventor
KREBS STEPHEN

Abstract

A new cultivar of hybrid Rhododendron plant named ‘HoldenRhodo221’ that is characterized by its resistance to root rot caused by Phytophthora cinnamomi, its cold hardiness (plant and flower buds) at least to U.S.D.A. Zone 5a, its flowers that are red to dark pink in color with strong marginal undulation, its profuse and consistent flowering, its compact plant habit, its foliage that is dark in color and glossy, and its good growth in full sun in unamended sand and gravel loam soils, up to at least pH 6.2.

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

It is claimed: 1. A new and distinct cultivar of Rhododendron plant named ‘HoldenRhodo221’ as herein illustrated and described.

Read the full patent: US Plant Patent PP35416 in full — the complete specification, every figure, and the file history.