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Centaurea moschata Splendens purple - seeds

Centaurea moschata Splendens pourpre
Sweet Sultan, Amberboa moschata

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Purple-pink pompom flowers with a very pale heart, exhaling a sweet fragrance reminiscent of amber, that's how the long summer flowering of this annual centaury presents itself. This lovely plant is perfect for filling empty spaces in flower beds, and its flowers are wonderful in fresh or dried compositions. It can be sown directly in place in spring or late summer and is easy to grow in ordinary, moist to dry soil.
Flower size
7 cm
Height at maturity
55 cm
Exposure
Sun
Annual / Perennial
Annual
Germination time (days)
20 days
Sowing method
Direct sowing, Sowing under cover
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Sowing period March to April, August to September
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Flowering time June to September
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Description

The 'Splendens' Purple Musk Thistle is an annual centaurea with a long, pleasantly scented, deep pink-purple summer flowering. This variety, derived from the musk thistle, a wild species native to Iran, blooms for weeks in sunny flower beds, and will create adorable fresh or dried country bouquets. Like many annual plants, it is ideal for filling in empty spaces between other plants. It can be sown directly in place in spring or late summer. It is easy to grow in the sun, in ordinary but well-drained, moist to dry soil.

Originating from western Asia, specifically the Caucasus, Iran, Iraq, and Turkey, Centaurea moschata (also known as Amberboa moschata) is not the most well-known of centaureas. This annual or biennial plant is also called Musk Thistle due to the aromatic compounds that resemble the scent of amber found in its flowers and seeds. It belongs to the asteraceae family, as evidenced by its flower heads.

The 'Splendens' Purple cultivar was selected for its deep pink flowers. This plant is 50 to 60 cm tall when in bloom and grows into an erect clump of slender leafy stems emerging from a basal rosette of leaves. The latter are grey-green, quite large, dissected, 10 to 25 cm long, with a toothed edge. The leaves of the stems are smaller, divided into linear segments with very toothed edges. Flowering occurs from July to September. The inflorescences in heads appear at the ends of the stems, resembling large, 5 to 8 cm wide pompoms. They arise from decorative scale-like buds and are composed of numerous fertile and sterile florets which are pale in the centre and deep pink on the edges. The gently scented, nectar-rich flowers attract many pollinating insects. This plant is hardy down to -12°C. Late summer sowing is possible in mild regions, producing earlier flowers in spring.

This musk thistle, once present in many cottage gardens, has been cultivated for over 350 years but has been neglected by today's gardeners. This medium-height plant is particularly well-suited for perennial borders and works well randomly sown among other plants. It is lovely in a flower meadow with other "wild" plants. In this case, centaureas, grasses, sainfoin, ornamental garlic, borage, motherwort, cornflowers, annual poppies, cosmos, and love-in-a-mist can be mixed. It can also be sown in flower pots and is an excellent cut flower, for fresh or dried bouquets, as it retains its beautiful colours once dried.

Flowering

Flower colour pink
Flowering time June to September
Inflorescence Flower head
Flower size 7 cm
Fragrance slightly scented, Amber fragrance
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Annual
Foliage colour green

Plant habit

Height at maturity 55 cm
Spread at maturity 30 cm
Growth rate fast

Botanical data

Genus

Centaurea

Species

moschata

Cultivar

Splendens pourpre

Family

Asteraceae

Other common names

Sweet Sultan, Amberboa moschata

Botanical synonyms

Amberboa moschata Splendens pourpre

Origin

Cultivar or hybrid

Planting and care

Sowing:

Sow musk thistles from March to April or from August to September, preferably directly in place, as their roots do not like being disturbed.

Choose a very sunny location and well-drained soil. Prepare the soil well, it should be finely raked, lightened, and rid of weeds. Sow the seeds 6 mm deep spaced 30 cm apart. Regularly water the soil, especially during dry periods. Germination usually takes 14-21 days. When the seedlings are sufficiently developed to be handled, thin out the plants and transplant them 30 cm apart.

Cultivation:

Centaurea moschata prefers light, even sandy, well-drained soil, and full sun. This plant thrives in moderately moist to moderately dry soil but dislikes excessive moisture and heavy soils. It is very adaptable and tolerates short periods of drought, and limestone. Removing faded inflorescences will encourage more flowers. This robust annual plant will grow in all regions. 

Sowing period

Sowing period March to April, August to September
Sowing method Direct sowing, Sowing under cover
Germination time (days) 20 days

Intended location

Suitable for Meadow
Type of use Border, Edge of border, Slope
Ease of cultivation Amateur
Exposure Sun
Soil pH Any
Soil moisture Dry soil, Ordinary, well-drained

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