Cosmos ‘Purity’
Cosmos bipinnatus · Flower · No. 44
- Sow under cover
- Mar–Apr
- Sow outdoors
- May
- Flowers
- Jul–Oct
- Germination
- 7–21 days
- Spacing
- 45 cm in the row, 45 cm between rows
- Days to flower
- 75–90 from sowing
- Sun
- Full sun
- Seed saving
- Moderate
| J | F | M | A | M | J | J | A | S | O | N | D | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Under cover | March | April | ||||||||||
| Outdoors | May | |||||||||||
| Flowers | July | August | September | October |
Notes
White cosmos, 1.2 m. Plant out after the last frost. Insects cross cosmos colours.
Saving seed · Moderate
Insects cross it with other varieties. Grow one variety, isolate, or bag and hand-pollinate.
- Grow one variety of this plant, or keep 50 m from others.
- Or bag three flowers before they open and hand-pollinate.
- Leave the seed to ripen fully, then dry 7–14 days.