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'PIIHP-I'

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Hydrangea paniculata Siebold Panicled hydrangea · Ornamentals · bred by MICHAEL A DIRR

also searched as: пиихп и

Variety description

10 August 2026

The plant is a compact shrub with a height of 0.8 to 1.2 m with dark green lanceolate foliage. The inflorescences have a paniculate shape, consisting of white flowers, which may acquire a soft pink tint by the end of the season.

The variety possesses strong shoots and high winter hardiness, withstanding temperatures down to -34°C. It prefers a sunny or semi-shaded location and well-drained, humic soils with an acidic or neutral reaction.

Due to its small size, the shrub is suitable for container cultivation, creating borders, and landscaping small gardens. The inflorescences are suitable for cutting and for forming dried bouquets.

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.

QZ

no record

Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.

Also known as

breeder code piihp-i

A single variety may be registered in different countries under different names. All records are consolidated into one profile based on the breeder's code—an internal number that is identical for the variety across all registries.

  • 'PIIHP-I' primary US
  • PIIHP-I QZ, US
  • PIIHPI GB, QZ

The primary name shown is the one under which the variety is registered in the largest number of jurisdictions. Search finds the variety by any of its names.

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

Parties

Breeder
Michael A. Dirr 17 Developed the variety
Applicant
Plant Introductions Inc. 63 Submitted the application to the register
Rights holder
University of Georgia Research Foundation Inc. / Plant Introductions, Inc.. 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.

United States of America № 12932800_2
Active
  1. Application filed 7 March 2011
  2. Registered 12 February 2013
  3. Currently active indefinite in the register

More 3 records protections in other jurisdictions are shown on the map above.

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

Found an error in the record?

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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: Panicled hydrangea

All 217 varieties of species

Hydrangea paniculata Siebold · Panicled hydrangea

Van Huylenbroeck Johan|Melle, BE

FR
5 records

Hydrangea paniculata Siebold · Panicled hydrangea

WIM RUTTEN

FR
4 records

Hpopr013

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Plant Select N.V.

6 records

Hydrangea paniculata Siebold · Panicled hydrangea

Information regarding the breeder received in the contribution to CPVO :De Belder J.

FR
1 record

Phantom

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Information regarding the breeder received in the contribution to CPVO :Zwijnenburg P.

FR
1 record

Hydrangea paniculata Siebold · Panicled hydrangea

No information of breeder available for this variety

FR
1 record

Nearby in the species list Mount Aso, Mt Everest, Mustila, October Bride, Ollede, Papillon, Pee Gee, Pee Wee, Perfect Pink, Phantom, Pink Diamond, Pink Lady, Pink Wave, Pinky Winky, Polar Bear, Praecox, Quick Fire, Ren101, Renba, Rencolor

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