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Collector's item

Serratula seoanei

Serratula tinctoria var. seoanei
Saw-wort

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More information

Serratula tinctoria var. seoanei, also known as the Galician Saw-wort has beautiful, fresh mauve flower heads. This botanical variety blooms continuously from late summer until frost and forms a clump of very decorative, grey-green, finely cut leaves. It is a very hardy perennial that looks superb in rock gardens, or slightly wild borders and beds. It is easy to grow in ordinary, even poor, periodically dry and rocky soil. It is also a lovely cut flower.
Flower size
3 cm
Height at maturity
30 cm
Spread at maturity
30 cm
Exposure
Sun
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 April, September to November
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Flowering time August to November
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Description

Serratula tinctoria var. seoanei, also known as the Galician Serratula, is a cousin of the Centaurea but it is smaller and its fresh mauve flower heads are more beautiful. This botanical variety blooms continuously from late summer until the first frost and forms a clump of very decorative greyish-green, deeply cut leaves. It is a very hardy perennial that looks superb in rock gardens or slightly wild borders and beds. It thrives in ordinary, even poor, occasionally dry and rocky soil. It is also a beautiful cut flower.

Naturally present in the north of Spain and southwest of France, the Galician Serratula is a herbaceous perennial plant of the aster family. Serratula tinctoria, also known as Dyer's Serratula, was formerly used in dyeing for the yellow colour released by its leaves. The seoanei variety forms a flowering plant 30 to 50 cm (12 to 20in) tall. It develops into an upright and dense clump, covered with beautiful dark green foliage with deeply cut narrow lobed, pinnate leaves. From the end of July until the first frost, this serratula will enliven the garden with its mauve flower heads resembling cornflowers, about 3 cm (1in) long. The flowers are rich in nectar and attractive to pollinators. It is also a long-lived perennial that readily self-seeds in light soil.

The medium height, Galician Serratula is particularly well-suited for perennial borders. It forms patches of a fresh and light colour that will blend well with catnips, globe thistles, ixias (corn lilies), and godetias. It will also look good in a wildflower meadow, where the poorer the soil, the more stunning the result. In this setting, centaury, grasses, sainfoin, phacelia, borage, agrimony, corn marigold, Eschscholzia californica, cosmos, and damask daisies can be mixed. It will also be beautiful and perform well in rock gardens. It is an excellent cut flower, for dried and fresh bouquets.

Serratula seoanei in pictures

Serratula seoanei (Flowering) Flowering

Flowering

Flower colour mauve
Flowering time August to November
Inflorescence Flower head
Flower size 3 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Plant habit

Height at maturity 30 cm
Spread at maturity 30 cm
Growth rate normal

Botanical data

Genus

Serratula

Species

tinctoria

Cultivar

var. seoanei

Family

Asteraceae

Other common names

Saw-wort

Origin

Central Europe

Product reference858891

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Planting and care

Serratula seoanei can thrive in ordinary, light, even poor and chalky soil, but it needs to be well-drained and in full sun. This plant prefers moderately moist to moderately dry soil in summer, but it dislikes winter wet. It is very adaptable and tolerates short periods of drought and urban pollution quite well. Removing faded flowers will encourage more flowers. This hardy and robust plant will grow in most types of soil, in all regions. The plants can be heavily pruned in summer to maintain a compact shape.

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Planting period

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

Intended location

Suitable for Meadow, Rockery, Woodland edge
Type of use Border, Edge of border, Container, Slope
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Amateur
Planting density 9 per m2
Exposure Sun
Soil pH Neutral, Calcareous
Soil type Chalky (poor, alkaline and well-drained), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Dry soil, Moist soil, Ordinary but well-draining and lightweight soil.

Care

Pruning instructions Remove faded flowers to encourage a second bloom. Prune the faded flowers as soon as they are no longer decorative, unless you want the plant to self-seed.
Pruning Pruning recommended once a year
Pruning time September to November
Disease resistance Good
Overwinter Can be left in the ground

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