PIIHM-II
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Michael Dirr
Hydrangea macrophylla (Thunb.) Ser. Bigleaf hydrangea · Ornamentals · bred by Ryoji Irie
also searched as: х20 02
10 August 2026
The variety forms a compact bush with a height of 80 to 125 cm. The inflorescences have a spherical shape. Flowering occurs on shoots of the previous and current year in the period from July to September.
The plant belongs to hardiness zones 5–9. Young leaves are distinguished by a purple hue, which creates a contrast with the flower coloration. The variety is part of the You&Me series.
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.
Variety registered as early as 5 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.
breeder code h20-02
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.
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.
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
More 5 records protections in other jurisdictions are shown on the map above.
Records are sourced from official registry publications. Data sources and legal status
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Same species
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Michael Dirr
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Kolk Jacobus W. P.|1187 NK Amstelveen, NL
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Matthes F.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Nearby in the species list Gudrun, Gull, Gypsy, Gyselheer, H. B. May, H. C. Zwart, H. Gerritse, H. J. Jones, H. Seidel, H18-12, H21-3, H211901, H211902, H211903, H211904, H211905, H211906, H211907, H211908, H212904