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Herbaceous Perennial

Aster scaber

rough-leaved aster

A hardy herbaceous perennial, to around 1.2m in height, used as a spring vegetable in Korea but also makes an impressive ornamental, with large, scalloped green leaves and masses of white, daisy-like flowers appearing in late summer to autumn which are loved by pollinators. The herby, earthy-tasting leaves can be harvested in spring when young, or older leaves can be dried and rehydrated later. Can be used raw or cooked in stir-fries or as a wrap for seasoned rice and vegetables

Synonyms

Doellingeria scabra

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Ultimate height

1–1.5 metres

Time to ultimate height

2–5 years

Ultimate spread

1–1.5 metres

Clay

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or South–facing or West–facing

Exposure

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: Asteraceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy, Clump forming
Genus: Aster can be perennials, annuals or subshrubs, mostly with narrow leaves, and solitary or clustered, daisy-like flowers
Name status: Correct

How to grow

Cultivation

Grow in fertile, humus-rich soil in sun or part shade

Propagation

Propagate by seed in spring to summer or propagate by cuttings in spring

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Flower borders and beds

Pruning

Cut back in autumn

Pests

Generally pest-free

Diseases

Generally disease-free

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