About
A clump-forming deciduous herbaceous perennial with narrow, lance-shaped dark green foliage and masses of semi-double, daisy-like violet-blue flowers with bright yellow centres, from September to October.
About the genus
Symphyotrichum includes around 90 species of annuals, biennials and perennials, mostly spread through the Americas, that were formerly included within the genus Aster. Leaves are simple, lance-shaped and entire, but it is their daisy-like flowerheads that they are grown for; central disc florets are typically yellow, surrounded by strap-shaped ray florets in shades of pink, blue, purple or white
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectEast-facing, North-facing, South-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH6
Plant details
Plant typeHerbaceous Perennial
HabitBushy, Climbing
FoliageDeciduous
Height0.1-0.5 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesCity and courtyard gardens, Cottage and informal garden, Gravel garden, Coastal
Care notes
CultivationThrives in fertile, moist but well drained soil in sun or partial shade. Plants will benefit from mulching in autumn, and division every few years to maintain vigour. Will not tolerate waterlogging in winter. For more advice see aster cultivation
PruningCut stems close to the ground in late autumn
PropagationPropagate by division in spring, replanting only vigorous young shoots
Pest resistanceMay be susceptible to aphids, leaf and bud eelworms, slugs, snails and tarsonemid mite
Disease resistanceMay be susceptible to Fusarium wilt, grey moulds, leaf spot and powdery mildews