H20-02
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Hydrangea macrophylla (Thunb.) Ser. Bigleaf hydrangea · Ornamentals · bred by Information regarding the breeder received in the contribution to CPVO :Rampp
also searched as: рио
10 August 2026
The shrub has a rounded shape, reaching a height and width of 60–90 cm. The foliage is dense, leathery, and dark green. Flowering begins in early summer and continues for a long period.
The mophead-type inflorescences are large. Flower coloration depends on soil pH: in acidic conditions they turn blue, and with an increase in pH they acquire purple or magenta shades.
The plant features sturdy stems that do not lodge under the weight of the inflorescences, and high resistance to powdery mildew. Winter hardiness corresponds to USDA zones 5–9, with flower buds possessing increased cold resistance compared to a number of analogs.
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.
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Same species
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
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
Information regarding the breeder received in the contribution to CPVO :Wädenswil
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Shinsuke Tanaka
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Rampp
Nearby in the species list RIE 03, RIE 04, RIE 05, RIE 06, RIE 09, RIE 12, RIE 13, RIEPERF, Rigi, RINPOKIRYU, Rio Grande, Ripple, Rippuru, Ritoruromannsu, river-line, Robert, Robin, Robur, Rochambeau, ROCO131801