About
This upright, half-hardy annual reaches heights of up to 1.2 meters and features delicately divided leaves. Each flower showcases pure white petals that merge to create a bowl-like shape encircling a yellow center. Blooms appear from summer and continue until the onset of autumn's first frosts.
About the genus
Cosmos comprises both annual and perennial species characterized by either simple or pinnately divided foliage. These plants produce sizable, long-stemmed flowers resembling daisies during the summer months.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Sheltered
- UK hardiness
- H3
Plant details
- Plant type
- Annual Biennial
- Habit
- Columnar upright
- Foliage
- Deciduous
- Height
- 1-1.5 metres
- Spread
- 0.5-1 metres
- Time to full height
- 1 year
- Suggested uses
- Cottage and informal garden, Patio and container plants
Care notes
- Cultivation
- Grow in moist, but well-drained soil in full sun. Suited to annual or cut-flower borders or as a summer infill
- Pruning
- Deadhead to prolong the flowering season
- Propagation
- See sowing seeds indoors
- Pest resistance
- May be susceptible to aphids and slugs
- Disease resistance
- May be susceptible to grey moulds