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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.

Hokomagedgre

Application submitted

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kolster Holding B.V.^^^Horteve Breeding B.V.

2 records

My Sisters Garden

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Cornelis Pieter Eveleens

2 records

Holibel

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

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

FR NL
2 records

H18-12

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Ryoji Irie

1 record

Baroque Angel

Terminated

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Frauke Engel

1 record

Kolmalin

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kolster Holding B.V.^^^Horteve Breeding B.V.

1 record

ERIC PELLERIN

Withdrawn

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Jardin Botanique de Vauville (FR)

FR
1 record

BC2402AC

Application submitted

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Blooming Creations International B.V.

1 record

H218915

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

1 record

Dark Angel

Terminated

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Frauke Engel

1 record

SCHROLLA22

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Schroll Management ApS

1 record

SCHROLLA25

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Schroll Management ApS

1 record

H220911

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

1 record

Dolfranc

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Marie-France Doll

1 record

Hokomagrede

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kolster Holding B.V.^^^Horteve Breeding B.V.

1 record

Red Angel

Terminated

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Frauke Engel

1 record

Sibilla

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

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

FR
1 record

Rosita

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Draps-Dom

FR
1 record

Furau Machiko

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Ebihara Hiroshi

FR
1 record

Nanping

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Santho Beheer B.v. (Eveleens C.P.)

FR
1 record

Amsterdam

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

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

FR
1 record

London

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

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

FR
1 record

Opaline

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Cayeux L.

FR
1 record

Burg Königstein

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Preisig (Haller)

FR
1 record