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Hydrangea seemanii - Climbing Hydrangea

Hydrangea seemannii
Climbing Hydrangea

4,6/5
39 reviews
7 reviews
2 reviews
2 reviews
1 reviews

I bought one from you several years ago. It grew but never produced a single flower! Disappointing.

s, 26/11/2025

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More information

Value-for-money
This climbing hydrangea eventually covers a wall or the trunk of a large tree with its dark green, leathery, glossy evergreen foliage. In summer, it bears airy white to cream-white flowerheads that emerge from large rounded buds. It prefers a sheltered position, in partial shade or in soft light, and a humus-bearing, well-drained soil that is not too dry. Its hardiness is of the order of -5 to -10 °C depending on exposure and microclimate. 
Flower size
14 cm
Height at maturity
6 m
Spread at maturity
3 m
Exposure
Partial shade, Shade
Hardiness
Hardy down to -12°C
Soil moisture
Moist soil
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Best planting time March to April
Recommended planting time February to April, September to October
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Flowering time June to August
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Description

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Hydrangeas: planting, pruning and care
Family sheet
by Alexandra 20 min.
Hydrangeas: planting, pruning and care
Read article

Hydrangea seemanii - Climbing Hydrangea in pictures

Hydrangea seemanii - Climbing Hydrangea (Flowering) Flowering
Hydrangea seemanii - Climbing Hydrangea (Foliage) Foliage
Hydrangea seemanii - Climbing Hydrangea (Plant habit) Plant habit

Plant habit

Height at maturity 6 m
Spread at maturity 3 m
Growth rate slow
Methods of attachment Clinging aerial roots

Flowering

Flower colour white
Flowering time June to August
Inflorescence Corymb
Flower size 14 cm

Foliage

Foliage persistence Evergreen
Foliage colour dark green

Botanical data

Genus

Hydrangea

Species

seemannii

Family

Hydrangeaceae

Other common names

Climbing Hydrangea

Origin

North America

Product reference602001

Planting and care

Hydrangea seemannii is preferably planted in spring in regions where winters can be a little cold, or in autumn in milder climates. Choose a position sheltered from cold winds, against a solid wall or at the foot of a large tree, in partial shade or in soft light. A little sun encourages flowering, but the soil must remain cool. Plant it in a deep, fertile, humus-bearing and well-drained soil; it can be acid, neutral or slightly chalky, but must be neither waterlogged nor too dry in summer. Water regularly for the first few years, especially at the foot of a wall where rain penetrates poorly, then mulch with compost or decomposed leaves. Guide and tie in the young stems until the aerial roots take hold. 

Planting period

Best planting time March to April
Recommended planting time February to April, September to October

Intended location

Suitable for Woodland edge, Undergrowth
Type of use Climbing
Type of support Tree, Wall
Hardiness Hardy down to -12°C (USDA zone 8a) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Partial shade, Shade
Soil pH Any
Soil moisture Moist soil, Fertile and humus-bearing

Care

Pruning instructions Pruning is rarely necessary. If the plant becomes too unwieldy, shorten the branches just after flowering, as the flowers form on the previous year’s shoots.
Pruning Pruning recommended once a year
Pruning time July to August
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground
4,6/5

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