Cosmos bipinnatus 'Double Dutch White'
cosmos
Cosmos makes a great filler for a sunny border, and if dead-headed regularly, ‘Double Dutch White’ is a tall and...
approx seeds
£2.99
available to order from late spring
1
Plant description
Cosmos makes a great filler for a sunny border, and if dead-headed regularly, ‘Double Dutch White’ is a tall and bushy plant which produces a succession of graceful, double and semi-double, ruffled white flowers from early summer to mid-autumn. It is very easy to grow, and it makes an invaluable addition to the cutting garden.
Eventual height & spread
Flowering period
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Plant features
Position
Full sun
Rate of growth
Fast-growing
Soil
Moderately fertile, moist, well-drained soil
Hardiness
Fully hardy
How to care for Cosmos bipinnatus Double Dutch White:
Seedlings should be potted up and grow on under glass until all risk of frost has passed and they can be planted outside in a well-prepared bed. Pinch out the growing tips to encourage bushier growth, and feed at regular intervals throughout summer with a high-potash fertiliser. Taller plants may need supporting with brushwood stems in exposed positions.
Sowing instructions:
In early spring, sow seed shallowly in seed trays and keep under glass, transplanting them into individual pots when large enough to handle. Harden off before planting outside after the frosts. Alternatively, sow in-situ in mid- to late spring in a well-prepared bed and thin the seedlings out as they grow to allow approximately 30cm between each.
