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Herbaceous Perennial
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained, Well–drainedpH
Acid, Alkaline, NeutralColour & scent
Stem | Flower | Foliage | Fruit | |
Spring | Green | |||
---|---|---|---|---|
Summer | Pink Yellow | Green | ||
Autumn | Pink Yellow | Green | ||
Winter |
Position
- Full sun
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H4Botanical details
- Family
- Asteraceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Bushy, Clump forming
- Genus
Cosmos can be annuals or perennials with simple or pinnately divided leaves and large, long-stalked daisy-like flowers in summer
- Name status
Correct
- Plant range
- Bolivia
How to grow
Cultivation
Grow in moderately fertile, moist, but well-drained soil in full sun. Mulch in autumn. In very cold areas, lift tubers before first frost and store until spring. Stems may be open and straggly in the first year
Propagation
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Patio and container plants
- Cut flowers
- Flower borders and beds
Pruning
Deadhead to prolong the flowering season
Pests
Diseases
May be susceptible to grey moulds and foot and root rot
Get involved
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