About
Aster 'Blue Autumn' is a bushy, herbaceous perennial that typically reaches a height of 50 cm. It features slender, dark green foliage and produces branched clusters of daisy-like blooms. The flowers display striking violet-blue ray petals surrounding yellow centers, adding color to gardens in late summer and autumn.
About the genus
Aster includes perennials, annuals, and subshrubs, typically characterized by slender leaves and flowers that resemble daisies, either appearing alone or in clusters.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
- Plant type
- Herbaceous Perennial
- Habit
- Bushy, Clump forming
- Foliage
- Deciduous
- Height
- 0.5-1 metres
- Spread
- 0.5-1 metres
- Time to full height
- 2-5 years
- Suggested uses
- Cottage and informal garden, City and courtyard gardens, Wildlife gardens
Care notes
- Cultivation
- Grow in moisture retentive but well drained soil in full sun.
- Pruning
- Cut back after flowering
- Propagation
- Propagate by division or basal cuttings only with permission. Unlicensed propagation prohibited.
- Pest resistance
- May be susceptible to slugs, snails, leaf and bud eelworms and aphids
- Disease resistance
- May be susceptible to fusarium wilt, grey moulds and leaf spot. Mildew resistant,