Not the plant you're looking for? Search over 300,000 plants
Herbaceous Perennial

Symphyotrichum novae-angliae 'Septemberrubin'
  • RHS Plants for pollinators

New England aster 'Septemberrubin'

'Septemberrubin' is a tall, vigorous perennial to 1m in height with hairy, lance-shaped green leaves from spring to autumn and ruby-red daisy-like flowers with yellow centres from late summer to autumn

Synonyms
Aster novae-angliae 'September Ruby'
Aster novae-angliae 'Septemberrubin'
see moreAster novae-angliae September Ruby
Symphyotrichum novae-angliae September Ruby
Buy this plant
Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
1–1.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Red Green
Autumn Red Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Asteraceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
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

Name status

Accepted

How to grow

Cultivation

Thrives in fertile, moist but well drained, preferably neutral to alkaline soil in sun or partial shade. Plants will benefit from mulching in autumn, and will not tolerate waterlogging in winter. May need support, see staking (perennials). For more advice see aster cultivation

Propagation

Propagate by division in spring; divide every third year to maintain vigour

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Wildlife gardens
  • Patio and container plants
  • Low Maintenance
  • Cut flowers
  • Flower borders and beds
  • Garden edging
  • Underplanting of roses and shrubs
Pruning

Cut back in late autumn. This cultivar can be cut or pinched back in early summer to encourage a bushier, compact form and later flowers

Pests

May be susceptible to slugs and snails on new growth, and to aphids and leaf and bud eelworms

Diseases

May be susceptible to Fusarium wilt, powdery mildews and grey moulds

Get involved

The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.