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Cultivation

Outdoor Cultivation: Hydrangea macrophylla

Hydrangea macrophylla (Thunb.) Ser.

Growing Hydrangea macrophylla outdoors requires protecting flower buds on previous year's shoots and managing soil acidity to control inflorescence color.

In the reference 130 varieties crop Bigleaf hydrangea, where this is mentioned in the description.

The main difficulty in cultivation lies in overwintering the flower buds that form on the previous year's shoots; their loss prevents the plant from blooming. In regions with cold climates, preference is given to remontant varieties capable of forming inflorescences on current year's shoots.

The plant is demanding regarding light conditions, preferring morning sunlight and protection from direct midday sun, which causes overheating of the root system. Regular watering is essential to maintain turgor, as during drought, the concentration of cell sap rises above 10%, leading to wilting.

The color of the inflorescences directly depends on the soil pH level: with an acidic reaction (5,2–6,2), aluminum becomes available, turning the petals blue, whereas on neutral and slightly alkaline soils, they acquire pink or red shades. Planting requires fertile, moisture-retentive substrates based on peat, coniferous soil, and humus.

General information about the subject — on the page Open field.

Sources8

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.

Kaho

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

TANAKA SHINSUKE

3 records

Caroussel

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Shoji Sakamoto

FR
3 records

Hokomachoko

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Peter Rudolf Kolster,Cornelis Pieter Eveleens

4 records

True Blue

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Higaki Harisson

FR
2 records

Dolkis

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Marie-France Doll

2 records

Kolmadaru

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Peter Rudolf Kolster

2 records

Sabrina

Protection expired

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kwekerij Sidaco B.V.

NL
2 records

H215906

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

First White

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :HBA B.V.

FR
2 records

SCHROLLA07

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Schroll Management ApS

2 records

Hobergine

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

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

FR NL
2 records

H218914

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

SCHROLLA15

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Schroll Management ApS

2 records

Paris

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

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

FR
3 records

Selma

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kwekerij Sidaco B.V.

2 records

Magical Emerald

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Santho Beheer B.V.

FR
2 records

Ningbo

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Cornelis Pieter Eveleens

2 records

Hortmacante

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Horteve Breeding B.V.

2 records

H220908

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

2 records

Hortmasnodo

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Horteve Breeding B.V.

2 records

Hortmawin

Terminated

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Cornelis Pieter Eveleens

2 records

Dolfarf

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Marie-France Doll

2 records

Dolfrag

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Marie-France Doll

2 records

ES11

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

TIMOTHY D WOOD

2 records