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Rio

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

also searched as: рио

Variety description

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.

Sources8
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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.

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

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

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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

Rigi

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

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

FR
1 record

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Shinsuke Tanaka

2 records

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

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

FR
1 record

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

Discussion: Rio

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