Cosmos bipinnatus Sea Shells ('Sea Shells') (mixed)
cosmea [Sea Shells Mixed]
A half-hardy annual, to 1m tall, with finely-divided, feathery foliage and blooms with fluted petals in a range of colours from white to pink to carmine red surrounding the central yellow eye
Size
Ultimate height
0.5–1 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 | Pink Red White | Green | ||
| Autumn | Pink Red White | Green | ||
| Winter |
Position
- Full sun
Aspect
West–facing or South–facing or East–facing
Exposure
Sheltered Hardiness
H3Botanical details
- Family
- Asteraceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Columnar upright
- Genus
Cosmos can be annuals or perennials with simple or pinnately divided leaves and large, long-stalked daisy-like flowers in summer
- Name status
Trade
How to grow
Cultivation
Grow in moist, but well-drained soil in full sun. Suited to annual or cut-flower borders or as a summer infill
Propagation
See sowing seeds indoors
Suggested planting locations and garden types
- Patio and container plants
- Cottage and informal garden
- Flower borders and beds
- Cut flowers
Pruning
Deadhead to prolong the flowering season
Pests
Diseases
May be susceptible to grey moulds
Get involved
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