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PIIHM-I

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Hydrangea macrophylla (Thunb.) Ser. Bigleaf hydrangea · Ornamentals · bred by Information regarding the breeder received in the contribution to CPVO :Dirr M.

also searched as: пиихм и

Variety description

10 August 2026

Inflorescences are flat, corymbose, belonging to the "lacecap" group: central fertile flowers are surrounded on the periphery by large sterile ones. Color varies from blue or periwinkle blue in acidic environments to deep pink in alkaline ones. The shrub is upright, rounded, spreading, reaching a height of 0.9–1.2 meters.

Distinctive features include bright red or red-burgundy stems and glossy dark green leaves that change color in autumn to orange, pinkish-red, and reddish-violet. The variety possesses increased resistance to powdery mildew and lodging, and is suitable for cutting and container cultivation.

Sources7
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Countries of admission

1 jurisdiction

Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.

active no record

Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.

Variety in registries Regions of admission, rights holders, and status of plant breeders' rights

Parties

Applicant
Plant Introductions Inc. 63 Submitted the application to the register
Rights holder
Plant Introductions Inc. 63 Holds the rights to the variety

Plant breeders' rights

The right is granted for a limited term: propagation of the variety requires a license from the rights holder.

Canada № 08-6394
Protection expired
  1. Application filed 7 December 2007
  2. Registered 30 November 2009
  3. Entry closed 30 November 2027

Records are sourced from official registry publications. Data sources and legal status

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This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources

Same species

Other varieties: Bigleaf hydrangea

All 2 407 varieties of species

H20-02

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Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Ryoji Irie

6 records

PIIHM-II

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Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Michael Dirr

5 records

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kolk Jacobus W. P.|1187 NK Amstelveen, NL

FR
6 records

Pieta

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Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

No information of breeder available for this variety

FR
1 record

Pigeon

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Wädenswil

FR
1 record

Nearby in the species list Peter Gynt, Petite Sœur Thérèse de LEnfant Jésus, Pfau, Ph. De Vilmorin, Phoebus, Pia, Pia Mina, Pichi Hime, Pieta, Pigeon, PIIHM-II, Pikohime, Pikushikatsuranomaihime, Pilatus, Pillnitz, Pimpelmees, Pimpernel, Pink Beauty, Pink Candy, Pink Delight

Discussion: PIIHM-I

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