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Hydrangea macrophylla Merveille Sanguine

Hydrangea macrophylla Merveille Sanguine
Bigleaf Hydrangea, French Hydrangea

4,5/5
24 reviews
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Plant received in perfect condition.

Danièle VALERE , 12/05/2025

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An old French variety with rounded flowerheads, ranging in colour from raspberry red to purple depending on the soil. This hydrangea flowers from July to September. Its dark foliage, tinged with bronze in summer, turns burgundy in autumn. Grow this shrub in a bed or in a large pot, in morning sun or partial shade, in moist, lime-free soil.
Flower size
15 cm
Height at maturity
1.30 m
Spread at maturity
1.30 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -15°C
Dry resistance
Average
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Best planting time March, October
Recommended planting time February to May, September to November
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Description

Hydrangea macrophylla 'Merveille Sanguine' is an old hydrangea variety prized for its truly spectacular colours. Its flowerheads range from red-pink to raspberry red in neutral soil, or even purplish violet in acidic soil. They stand out against dark foliage, tinged with bronze and purple from summer onwards, which turns burgundy red in autumn. This French variety, bred by Henri Cayeux in the 1930s, remains one of the most interesting red hydrangeas for slightly shady areas of the garden.

Hydrangea macrophylla belongs to the Hydrangeaceae family. The botanical species originates from Japan, but 'Merveille Sanguine' is a horticultural selection also sold under the names 'Brunette', 'Colour Fantasy' and 'Folis Purpureus'. This deciduous shrub forms a dense, rounded bush measuring 1.20 to 1.50 m in height and spread. Its growth is fairly slow during the first few years, then becomes regular. Its large, oval, thick, toothed leaves unfurl in bronze-green shades. They darken over the summer and turn purple, especially if the plant receives sufficient light. As autumn approaches, they take on dark red to burgundy shades before falling. Flowering takes place from July to September, sometimes lasting until October in a mild climate. The flowerheads, 15 to 20 cm across, are composed mainly of decorative sterile florets. Their colour depends on the nature of the soil. It remains red-pink to raspberry red in neutral or slightly acidic soil and becomes darker, turning purple to blackcurrant violet, in acidic soil containing assimilable aluminium. The cut flowers last well in a vase and can also be dried. This variety is rated as hardy to -15 °C, and it tolerates coastal conditions when sheltered from strong winds.

This 'Merveille Sanguine' hydrangea can be planted in a shrub border, a not-too-tall flowering hedge or grown in a large container on a slightly shady terrace. Thanks to its autumn foliage, this shrub remains decorative until the beginning of winter. In a romantic or Japanese-inspired garden, it can be paired with white flowers and silvery foliage. Hydrangea serrata 'White on White', Camellia japonica 'Nobilissima', Fuchsia magellanica 'Hawkshead' and the fern Athyrium niponicum 'Pictum' provide different flowers and foliage that highlight the rounded, colourful mass of this hydrangea.

 

 


 

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

Hydrangea macrophylla Merveille Sanguine in pictures

Hydrangea macrophylla Merveille Sanguine (Flowering) Flowering
Hydrangea macrophylla Merveille Sanguine (Foliage) Foliage

Plant habit

Height at maturity 1.30 m
Spread at maturity 1.30 m
Habit irregular, bushy
Growth rate normal

Flowering

Flower colour red
Flowering time July to September
Inflorescence Corymb
Flower size 15 cm
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour bronze

Botanical data

Genus

Hydrangea

Species

macrophylla

Cultivar

Merveille Sanguine

Family

Hydrangeaceae

Other common names

Bigleaf Hydrangea, French Hydrangea

Botanical synonyms

Hydrangea macrophylla ‘Brunette’, Hydrangea macrophylla ‘Colour Fantasy’, Hydrangea macrophylla ‘Folis Purpureus’

Origin

Cultivar or hybrid

Product reference • 6783211

Planting and care

Hydrangea 'Merveille Sanguine' should be planted in deep, fertile, humus-rich, moist but well-drained soil, preferably neutral to acidic. It does not need pure ericaceous compost: an addition of compost or leaf mould is sufficient in deep, well-loosened soil. It does not thrive in chalky soil. A bright position, in gentle sun or partial shade, enhances the purple hues of the foliage. In an oceanic climate, it tolerates more sun provided the soil remains moist. It prefers a position sheltered from cold winds and late frosts. Regular watering and mulching are useful during dry periods. Growing in a pot is possible in a container with drainage holes, measuring at least 50 cm in diameter.

Planting period

Best planting time March, October
Recommended planting time February to May, September to November

Intended location

Suitable for Woodland edge
Type of use Border, Small gardens, Container, Hedge
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Tolerance to sea spray: 1
Ease of cultivation Amateur
Planting spacing Every 120 cm
Exposure Sun, Partial shade
Soil pH Acidic, Neutral
Soil type Silty-loamy (rich and light)
Soil moisture Moist soil, humus-rich, well-drained

Care

Pruning instructions 'Merveille Sanguine’ flowers on wood formed the previous year. In late winter, limit pruning to removing the dry flower heads above the first pair of strong buds, as well as dead wood and a few old stems. Severe pruning would compromise the following year's flowering.
Pruning Pruning recommended once a year
Pruning time March
Soil moisture Moist soil
Dry resistance Average
Disease resistance Good
Overwinter Can be left in the ground
4,5/5

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