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Clematis triternata Tranquility

Clematis triternata x Tranquility
Sweet Autumn Clematis, Virgin's Bower

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A climbing clematis from the flammula group, with small single flowers in a light pink colour, beautifully scented. This lovely vine, as creeping as it is climbing, is so floriferous in summer that it envelops bushes in a pastel cloud, exuding a scent of bitter almond. Charming, natural, and undemanding, this variety thrives in full sun or partial shade in well-drained garden soil, even if it is limestone and dry in summer.
Flower size
3 cm
Height at maturity
5.50 m
Spread at maturity
2 m
Exposure
Sun, Partial shade
Hardiness
Hardy down to -18°C
Soil moisture
Dry soil, Moist soil
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Best planting time March, October
Recommended planting time March to May, September to November
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Flowering time July to October
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Description

The Clematis (x) triternata 'Tranquillity' charms with its simplicity and the abundance of its small light pink flowers, pleasantly fragrant in the evening. Covered with flowers throughout the summer, it forms a true pastel cloud that exhales a sweet scent of bitter almond and vanilla for metres around. It is a vigorous and undemanding climber, to be placed near low bushes that it will climb, in a free or evergreen hedge, or on a fence. It settles happily in the sun as well as in partial shade, in a well-drained garden soil, even limestone and dry in summer.

The genus Clematis belongs to the family of Ranunculaceae. The triternata 'Tranquillity' clematis is a British creation attributed to Barry Fretwell. The Clematis (x) triternata, on the other hand, is a hybrid obtained by cross-breeding the Clematis flammula and C. viticella, two hardy southern species adapted to dry summers. 'Tranquillity' is a climbing plant with long woody stems and is particularly floriferous. It is classified in the group of clematis that flower from July until early autumn, for four months, on the shoots of the current year. It can easily reach 5 to 6 m (16 to 20ft) in height, even 7 m (23ft) in rich and moist soil. By pruning it in spring, it will become more ramified and be contained to more modest dimensions. The flowering takes the form of small pale pink flowers with 4 tepals and prominent pale yellow stamens, measuring 2.5 to 3.5 cm (1in) in diameter, fragrant and honey-scented. It is followed by the formation of feathery, silver and silky fruits, decorative for several weeks. The foliage, deciduous in winter, is composed of leaves cut into small dark green leaflets, thick and shiny. This clematis resembles the C. x triternata 'Rubromarginata', but lighter. It seems to be slightly less vigorous according to some sources.

The 'Tranquillity' clematis competes with climbing vines in conquering unsightly buildings, small trees, or unsightly fences. It will work wonders when installed at the top of a retaining wall from which it will cascade down. Its pastel flowering will blend well with the purplish foliage of the dyer's vine and accompany the fragrant bouquets of climbing roses. It will pleasantly contrast with evergreen shrubs with dark green foliage, such as cypresses, yews, and laurel tins, for example. This clematis, which tolerates dry and limestone soils, is particularly recommended for gardens in the South. Plant your clematis on both sides of the support to be covered.

Plant habit

Height at maturity 5.50 m
Spread at maturity 2 m
Growth rate normal

Flowering

Flower colour pink
Flowering time July to October
Flower size 3 cm
Fragrance Fragrant, scent of bitter almond and vanilla
Bee-friendly Attracts pollinators
Fruit colour grey

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Botanical data

Genus

Clematis

Species

triternata x

Cultivar

Tranquility

Family

Ranunculaceae

Other common names

Sweet Autumn Clematis, Virgin's Bower

Origin

Cultivar or hybrid

Product reference1011321

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Planting and care

The 'Tranquillity' clematis, due to its origins, tolerates hot climates and dry summers quite well, unlike the Montana variety, for example. It can be planted in full sun or partial shade. Plant it in fertile, well-drained soil, shading the roots and base of the stem (with a flat tile, for example). Its cold resistance, which is good (-15°C (5°F) at its lowest), will be better if the soil is slightly dry in winter. Once well established, it is resistant to drought and does not require watering in summer.

Plant it by covering the root ball with 3 cm (1in) of soil, in soil worked to a depth of 20 cm (8in), lightened with good compost and coarse sand. After planting, cut back the clematis stems to about 30 cm (12in) from the base above a nice pair of buds. In the first few weeks, water regularly. However, be careful not to let the water stagnate as this can cause fungus to develop at the collar. Mulch all clematis plants in February with garden compost or well-rotted manure, avoiding direct contact with the stems. Train the stems, without squeezing them, until the plant can grip onto the support itself. Clematis also enjoy growing freely on neighbouring plants. After a few years, cover the base of your climbing clematis with a small mound of soil, in order to reduce the risk of wilting while promoting the growth of vigorous shoots from the stump. Voles and grey worms can attack clematis and devour the stems. Aphids and greenhouse whiteflies are also potential pests of clematis plants.

Planting period

Best planting time March, October
Recommended planting time March to May, September to November
Type of support Arbour, Pergola, Tree, Wall

Intended location

Suitable for Meadow, Woodland edge
Type of use Free-standing, Hedge, Climbing
Hardiness Hardy down to -18°C (USDA zone 7a) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Sun, Partial shade
Soil pH Neutral, Any
Soil moisture Dry soil, Moist soil, fertile, deep and well-drained

Care

Pruning instructions Prune in March to 30-50 centimetres (12-20 inches) above the ground. For plants that climb bushes or tree tops, prune every two to three years.
Pruning Pruning recommended once a year
Pruning time March
Soil moisture Dry soil, Moist soil
Disease resistance Good
Overwinter Can be left in the ground

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