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Centaurea montana Caramia

Centaurea x montana Caramia
Hybrid knapweed, Mountain bluet, Mountain bornflower, Perennial bornflower, Great blue-bottle

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A lovely hybrid centaury. It produces an abundance of flowers from spring to summer and is easy to grow in well-drained soil that is not too dry. This bushy plant measures about 45 to 50 cm (18 to 20in) in all directions. It bears velvety green-grey foliage. It produces a multitude of dark flower buds that open into pink-purple tousled heads with a slightly metallic hue. The flowers are incredibly popular with pollinators. Just like its ancestor, the robust mountain cornflower, this perennial is perfect for ornamental use in countryside beds and sunny borders.
Flower size
5 cm
Height at maturity
50 cm
Spread at maturity
50 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
Dry soil, Moist soil
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Best planting time March, October
Recommended planting time February to May, August to October
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Flowering time May to July
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Description

Centaurea 'Caramia' is part of these new hybrids of mountain cornflower that revisit this robust perennial so widespread in gardens. The fringed flowers of 'Caramia' are true pink cornflowers and beautifully swirling. They bloom in large numbers from late spring and continue throughout summer if the soil remains moist and faded flowers are removed. The reputation of the mountain cornflower is well established: it grows everywhere, in heavy or light soils, in the sun or in partial shade. Once out of fashion, it is making a strong comeback with new colours that are hard to resist!

 

Spontaneous in the mountains of Europe, Centaurea montana is an herbaceous perennial plant of the Asteraceae family. It develops from trailing rhizomes. This medicinal and ornamental plant has been cultivated for a long time in all gardens where it self-seeds spontaneously. It prefers limestone and clayey soil with a rocky tendency. Its deciduous foliage falls in winter. Through hybridisation with other species, it has created many interesting varieties, such as 'Caramia'.

'Caramia' has foliage that differs slightly from that of the mountain cornflower: it is less hairy and slightly less grey. The plant forms bushy clumps, 50 to 60cm (20 to 24in) tall when in bloom (30cm (12in) for the foliage), and at least 40cm (16in) wide. Its upright stems carry leaves that are 5 to 6cm (2in) long, lanceolate in shape, with entire margins, and a green colour tinged with grey. Flowering takes place from spring to summer, lasting 2 to 3 months, earlier or later depending on the region. The decorative, dark brown floral bud is a head composed of tightly packed bracts, resembling a small artichoke. The originality of this selection lies in the appearance of the inflorescences, which are pink and swirling. These are large heads approximately 5cm (2in) in diameter, with a deep pinkish-purple centre, surrounded by longer florets, divided into slender lobes, of a lighter mauve-pink hue. It is a nectar-producing plant that produces high-calorie pollen, greatly appreciated by pollinating insects, especially bumblebees.

 

Centaurea 'Caramia' is a perfect perennial in a countryside setting or in a naturalistic bed. Highlight it against a background of Allium azureum. An historic ally of wild and romantic gardens, the mountain centaury is also highly appreciated in more contemporary compositions. It is well suited to a rock garden, where it can accompany helianthemums and Centranthus ruber. 'Caramia' pairs wonderfully with the blue flowers of the species, scabious, small thistles (Echinops ritro), or even the incredible blue of the wild chicory. It can also be accompanied by small grasses like Stipa or golden-leaved carex. It will find its place in a rock garden, and at the edge of beds, paths, or lawns. It can be used to create lovely countryside bouquets or to dry its long-lasting heads for decoration.

Centaurea montana Caramia in pictures

Centaurea montana Caramia (Flowering) Flowering
Centaurea montana Caramia (Foliage) Foliage

Flowering

Flower colour pink
Flowering time May to July
Inflorescence Flower head
Flower size 5 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour green

Plant habit

Height at maturity 50 cm
Spread at maturity 50 cm
Growth rate normal

Botanical data

Genus

Centaurea

Species

x montana

Cultivar

Caramia

Family

Asteraceae

Other common names

Hybrid knapweed, Mountain bluet, Mountain bornflower, Perennial bornflower, Great blue-bottle

Origin

Cultivar or hybrid

Product reference863121

Planting and care

Plant in ordinary, well-drained soils, even clayey, calcareous, or poor ones. Place in full sun or partial shade. It tolerates heavy and moist soils but prefers rocky and well-drained soils. Periodically dry soils in summer simply make it disappear until the return of rain. Water it generously at planting and maintain regular watering during the first 8 weeks. After flowering, prune the flower stalks to the ground, allowing for a late summer flowering comeback.

It is sensitive to powdery mildew in summer. As soon as the foliage is affected (covered in "white"), after an initial flowering, prune the plant close to the ground. After a few waterings, new foliage and a second flowering will develop.

16
€14.50 Each
6
€19.50

Planting period

Best planting time March, October
Recommended planting time February to May, August to October

Intended location

Suitable for Meadow, Rockery, Woodland edge
Type of use Edge of border, Slope
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Beginner
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Neutral, Calcareous
Soil type Chalky (poor, alkaline and well-drained), Clayey-chalky (heavy and alkaline), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Dry soil, Moist soil, well-drained

Care

Pruning instructions Cut the faded flower stalks in summer to encourage a second flowering in late summer.
Pruning Pruning recommended once a year
Pruning time July to August
Disease resistance Average
Overwinter Can be left in the ground

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