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Clematis Rosamunde

Clematis patens Rosamunde
Early Large-flowered Clematis

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This compact Clematis shines with its long flowering that stretches throughout the summer, covering it with large star-shaped flowers, in a light pink highlighted by darker streaks in the centre of each petal. The heart of yellow stamens adds a touch of distinction to the beauty of the well-opened, 8 to 10 cm (3 to 4in) wide corolla. Its vibrant green foliage enhances the flowering. Perfect for adorning a small trellis, Rosamunde is a hardy climber that will thrive in the sun in moist, well-drained soil, and can also be grown in a container on a terrace.
Flower size
9 cm
Height at maturity
2 m
Spread at maturity
1 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time April, September
Recommended planting time March to May, September to October
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Flowering time June to September
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Description

Clematis 'Rosamunde' is a charming variety which flowers twice, allowing you to enjoy its beautiful blooms for nearly the whole summer. From June onwards, large flowers in the shape of stars appear, a light pink tinged with salmon and highlighted by a dark pink stripe at the centre of each petal. The open corolla is adorned with a yellow stamen heart, which contrasts pleasantly with the pink. Its beautiful green foliage harmonises perfectly with the flowers, making this small climbing plant a gem for the garden. Its compact size means it can be planted in a pot to enhance a terrace or balcony.

Clematis is a member of the Ranunculaceae family, like Anemones, Trollius, Hellebores, and many other ornamental genera. With approximately 300 species, the genus Clematis includes numerous climbers, as well as some herbaceous perennials, such as Clematis stans. Clematis patens, from which 'Rosamunde' originates, is a woody clematis native to low-altitude forests in northern Japanese islands, described in 1836. It belongs to the group of Clematis that bloom twice. The first blooms appear in spring on the previous year's shoots, followed by a second flowering in late summer on the current year's growth. This characteristic explains its success since its introduction to Europe in the second half of the 19th century, where it has been extensively hybridized to produce numerous horticultural varieties.

Rosamunde is a cultivar that appeared on the market in the year 2000, created by the German breeder Willem Straver. This Clematis bears quite large, patens-type flowers (8 to 10 cm (3 to 4in)), first from June, and then again later in summer. This long flowering period is the main asset of this beautiful variety, with its open star-shaped flowers composed of 6 to 10 tepals (the term used for petals and sepals that are morphologically very similar in this plant). The pointed-tip tepals are a beautiful light pink with a hint of salmon and streaked in the middle with a dark pink stripe that runs from the centre to the edge. The corolla's centre is occupied by a cluster of yellow stamens, which adds to the romantic charm of the blooms. The deciduous tri palmate leaves are a lovely vibrant green, which perfectly complements the flower colour. This Clematis attaches itself to a support or host plant using modified petioles that form tendrils. With a rather fast growth rate (about 40 to 50 cm (16 to 20in) per year), it will reach 2 m (7ft) high with a width of 1 to 1.5 m (3 to 5ft). It can be grown in a container, making it ideal for decorating a small trellis on a terrace. If planted in the garden, it will thrive in any good garden soil that is sufficiently rich in organic matter, not too dry or too wet (and, in all cases, well-drained). It prefers full sun with some protection at the base (a flat tile works perfectly) and can tolerate dappled shade. It is quite hardy and can withstand temperatures as low as -23°C.

Rosamunde is a small Clematis with a romantic charm that will pair perfectly with roses when planted at the base of a fence. The Swany Groundcover Rose with its intricate white flowers that bloom at the same time would be an excellent choice. The Bobo Panicle Hydrangea, a very compact Hydrangea, would also make a great foreground with its large white flower heads turning pale pink towards the end of the season. To end on an equally romantic note, plant Marie Blue Ceanothus with its ethereal sky-blue summer blooms in your flower bed to create a contrast with Rosamunde's pink…

Clematis Rosamunde in pictures

Clematis Rosamunde (Flowering) Flowering
Clematis Rosamunde (Foliage) Foliage
Clematis Rosamunde (Harvest) Harvest

Plant habit

Height at maturity 2 m
Spread at maturity 1 m
Growth rate normal

Flowering

Flower colour pink
Flowering time June to September
Inflorescence Solitary
Flower size 9 cm

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Botanical data

Genus

Clematis

Species

patens

Cultivar

Rosamunde

Family

Ranunculaceae

Other common names

Early Large-flowered Clematis

Origin

Cultivar or hybrid

Product reference182791

Planting and care

Preferably plant Clematis 'Rosamunde' in the sun, in a fertile, humus-rich, well-drained soil, shading the roots and the base of the stem (with a flat tile, for example). Herbaceous species prefer full sun and can wither in soil that is too wet.

Plant your clematis by covering the root ball with 3 cm (1in) of soil, in a soil worked to a depth of 20 cm (8in), lightened with good compost. Water regularly during the first few weeks, but be careful of stagnant water which can cause rotting at the collar. Cover the base of climbing clematis with a small mound of soil, reducing the risk of clematis wilt while promoting the emergence of vigorous new shoots from the crown. After planting, prune the stems of deciduous climbing clematis to around 30 cm (12in) from the base, above a healthy pair of buds. Mulch in February with garden compost or well-rotted manure, avoiding direct contact with the stems. Train the stems, without crushing them, until the plant grips for itself. Clematis also like to grow freely on neighbouring plants.

This variety flowers on the previous year's shoots in early summer, then on the current year's shoots in the second half of summer (hence its long flowering...). Prune it lightly in March (a simple cleaning is enough). After the spring flowering, cut back half of all the branches so that the clematis branches strongly, and forms new shoots for the second flowering during summer. You can prune the clematis down to 70 cm (28in) from the ground. Only prune severely to rejuvenate your clematis every 4 or 5 years. Clematis can be attacked by voles and slugs which can devour the stems. Aphids and greenhouse whiteflies are also potential pests.

 

 

 

Planting period

Best planting time April, September
Recommended planting time March to May, September to October
Type of support Trellis

Intended location

Suitable for Meadow, Woodland edge
Type of use Container, Climbing
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Any
Soil moisture Moist soil, fertile, deep, and well-drained

Care

Pruning instructions This variety, which flowers on last year's shoots, should be lightly pruned in March (a simple cleaning is sufficient). After the spring flowering, cut back all the branches by half to encourage the clematis to branch out strongly and produce new shoots for a second flowering during summer. It is possible to cut back the clematis up to 60 cm (24in) from the ground. Only prune severely to rejuvenate your clematis every 4 or 5 years.
Pruning Pruning recommended once a year
Pruning time March, July
Soil moisture Moist soil
Disease resistance Good
Overwinter Can be left in the ground

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