H218915
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
Variety traits
Double-flowering in Hydrangea macrophylla
Hydrangea macrophylla (Thunb.) Ser.
This trait is characterized by an increased number of petaloid sepals in sterile flowers and serves as a key ornamental target for Hydrangea macrophylla.
In the reference 88 varieties crop Bigleaf hydrangea, where this is mentioned in the description.
In Hydrangea macrophylla, double-flowering manifests as the formation of multi-layered, ruffled, or star-shaped blooms. In breeding and variety testing, this trait is evaluated qualitatively through visual assessment of the number of petaloid sepal whorls and inflorescence density, as there is no standardized quantitative scale for it.
The expression of a cultivar’s double-flowering potential often depends on the age of the plant, with young specimens sometimes failing to reach target levels in their first years. The formation of complex flowers requires significant resources; therefore, a balanced nutrient program, with an emphasis on potassium and phosphorus, is essential for maintaining ornamental quality. A high degree of double-flowering increases the weight of the inflorescences, which often leads to shoot lodging and necessitates the use of supports or specialized pruning.
General information about the subject — on the page Double flowering / Reversion.
Varieties of Bigleaf hydrangea mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
H218917
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
H218921
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
BRIDO
TerminatedHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
SNOWFLAKE NURSERY (US)
FR
1 record
H220909
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
H220911
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
RIEPERF
WithdrawnHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Blink
WithdrawnHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Van Klaveren Plant B.V.
Kamosere Gokigenyo
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Toyokazu Ichie
Furau Yoshimi
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Ebihara Hiroshi
FR
1 record
Kriemhilde
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Wintergalen J.
FR
1 record
Amethyst
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Haworth-Booth
FR
1 record
Setsuka-yae
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Japan
FR
1 record
You & Me
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Ryoji Irie
FR
5 records
You and Me
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Ryoji Irie
FR
1 record
Izu-no-hana
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Iida Takemi & Watanabe Kenji
FR
1 record
Izu-no-hana-Temari
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Japan
FR
1 record
Izu-no-Odoriko
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Japan
FR
1 record
Pretty Maiden
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
No information of breeder available for this variety
FR
1 record
Yodogama
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
No information of breeder available for this variety
FR
1 record
Taika-yae
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Japan
FR
1 record
Zhuni Hito
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Japan
FR
1 record
Johgasaki
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Hirasawa
FR
1 record
Symphonie
ActiveHydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Ryoji Irie
FR
1 record