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Centaurea hypoleuca John Coutts

Centaurea hypoleuca John Coutts
Knapweed

3,9/5
4 reviews
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1 reviews
1 reviews

Really too small for the price. Hopefully it will still grow a bit.

Sylvie S., 17/02/2020

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This plant carries a 12 months recovery warranty

More information

An herbaceous perennial with slightly fragrant flowers in a very bright pink to violet colour. Easy to grow in the sun.
Flower size
5 cm
Height at maturity
60 cm
Spread at maturity
45 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -23°C
Soil moisture
Moist soil
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Best planting time March to April, September to October
Recommended planting time February to April, September to November
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Flowering time June to August
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Description

Centaurea hypoleuca 'John Coutts' is an herbaceous perennial with slightly fragrant bright pink to purple flowers. It is easy-to-grow and highly ornamental. Its bushy foliage provides a beautiful transition between different flowerings, ideal for enhancing flower beds.

 

 

The flowering spreads from June to late August and maintains the airy aspect typical of centaureas, despite a particularly dense and large head (up to 6cm (2in)). Its laciniate foliage bears alternate leaves. The leaves are a beautiful bright green on the front and grey-white on the back. A very bushy plant, it reaches 60cm (24in) in height. Its long flowering period makes it an ideal plant for the edge of a flower bed. Combine this sculptural plant with other centaureas of various colours, such as the mysterious 'Black Sprite', its alter ego the pure white Centaurea 'Alba', or the delightful Astrantia major 'Shaggy'. A beautiful flower, it will not feel out of place in a romantic garden. Not demanding, it adapts to all types of soil as long as it is exposed to full sun. It will also tolerate partial shade. Perfect for bouquets, it is an excellent melliferous plant and butterflies love it!

Centaurea hypoleuca John Coutts in pictures

Centaurea hypoleuca John Coutts (Flowering) Flowering
Centaurea hypoleuca John Coutts (Foliage) Foliage

Flowering

Flower colour pink
Flowering time June to August
Inflorescence Flower head
Flower size 5 cm
Fragrance slightly scented
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Evergreen
Foliage colour green

Plant habit

Height at maturity 60 cm
Spread at maturity 45 cm
Growth rate normal
Suckering/invasive plant

Botanical data

Genus

Centaurea

Species

hypoleuca

Cultivar

John Coutts

Family

Asteraceae

Other common names

Knapweed

Origin

Cultivar or hybrid

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Planting and care

Plant Centaurea hypoleuca 'John Coutts' in a flower bed in any well-drained neutral or limestone soil. Lighten up heavy soils, if necessary, with some leaf compost and sand. Keep it in a sunny spot, as it performs better than in the shade.

Planting period

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

Intended location

Suitable for Meadow, Rockery
Type of use Border
Hardiness Hardy down to -23°C (USDA zone 6a) 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), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Moist soil, well-drained

Care

Pruning instructions Removing faded inflorescences will encourage the renewal of flowers. The plants can be pruned severely in summer to maintain a compact habit.
Pruning Pruning recommended once a year
Pruning time July to August
Disease resistance Very good
Overwinter Can be left in the ground
3,9/5
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