Symphyotrichum lateriflorum var. horizontale
horizontal calico aster
'Horizontalis' is a compact herbaceous perennial with small, narrow leaves and wide-spreading branched sprays bearing tiny white-rayed flowers with reddish centres
Size
Ultimate height
0.1–0.5 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Green | |||
---|---|---|---|---|
Summer | Green | |||
Autumn | Red White | Green | ||
Winter |
Position
- Full sun
Aspect
South–facing or West–facing or East–facing
Exposure
Exposed Hardiness
H7Botanical details
- Family
- Asteraceae
- Native to GB / Ireland
- 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
Correct
- Plant range
- N America
How to grow
Cultivation
Grow in moderately fertile, well-drained soil in open sunny position; may need staking
Propagation
Propagate by division in spring
Suggested planting locations and garden types
- Cottage and informal garden
- Wildlife gardens
- Coastal
- Gravel garden
- Prairie planting
- Flower borders and beds
- Cut flowers
Pruning
Cut back in late autumn
Pests
Generally pest-free
Diseases
Asters may suffer Verticillium wilt, powdery mildews and grey moulds
Get involved
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