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: ром
10 August 2026
The plant forms a compact shrub reaching a height of 1.0–1.2 meters. The inflorescences of the variety are cherry-red in color. The variety is remontant, which allows it to form inflorescences on both last year's and new shoots.
The plant is adapted to USDA hardiness zones 6–8. When temperatures drop below –18 °C, the shrub requires protection. The variety is suitable for planting in mixed borders and container cultivation, while requiring the maintenance of a constant soil moisture regime.
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.
Records are sourced from official registry publications. Data sources and legal status
The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.
This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources
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 :Mouillère E.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Gebr. Jonkers Elshout B.V.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Ebihara H.
Nearby in the species list river-line, Robert, Robin, Robur, Rochambeau, ROCO131801, Rodeo, Roi Albert, Roi Albert de Belgique, Rojojo, Romantic Fantasy, Ronsard, Roodborstje, Roodstaart, Rosa 90, Rosa King, Rosa Rita, Rosa Teller, Rosa Zwerg, Rosabelle