Cosmos bipinnatus 'Purity'
cosmea 'Purity'
'Purity' is a tall annual to about 1.2m, with bright green, finely-divided, feathery foliage on branching, upright stems. Pure white, saucer-shaped flowers 8cm across, with a yellow button centre, are produced throughout the summer
Size
Ultimate height
1–1.5 metresTime to ultimate height
1 yearUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | White | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or East–facing or West–facing
Exposure
Sheltered Hardiness
H3Botanical details
- Family
- Asteraceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Bushy
- Genus
Cosmos can be annuals or perennials with simple or pinnately divided leaves and large, long-stalked daisy-like flowers in summer
- Name status
Unresolved
How to grow
Cultivation
Grow in moderately fertile, moist but well-drained soil in full sun or light shade
Propagation
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Cut flowers
- Flower borders and beds
Pruning
Deadhead to prolong the flowering season
Pests
Generally pest-free
Diseases
May suffer from root rot and grey moulds
Get involved
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