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Herbaceous Perennial

Asyneuma canescens

A clump-forming, erect perennial to 1m tall with greyish-green, ovate to lance-shaped basal leaves and lance-shaped stem leaves up to 6cm long with rounded teeth. Small, star-shaped, violet-blue flowers with narrow petals are borne in spike-like panicles from midsummer into early autumn

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Ultimate height

0.5–1 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Sand

Moisture

Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

East–facing or South–facing or West–facing

Exposure

Exposed or Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Campanulaceae
Native to the UK: No
Foliage: Deciduous
Habit: Clump forming
Name status: Unresolved
Plant range: S Europe

How to grow

Cultivation

Grow in any moderately fertile, well-drained soil in full sun

Propagation

Propagate by seed or by division

Suggested planting locations and garden types

Cottage and informal garden
Rock garden
Wildflower meadow
Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to slugs and snails

Diseases

Generally disease-free

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