Common Name: Cosmos Double Dutch Rose
Scientific Name: Cosmos bipinnatus
Life Cycle: Annual
Remarks: Blooming in rose pink. Flowers will be semi-double and double flowers, even including some double seashell flowers.
Plant Height: 120cm
When: Spring + Summer (Winter in warmer climates)
Sowing Depth + Method: Covering seeds lightly. Pinch out your cosmos seedlings when they are 30cm tall (3 true sets of leaves). Pinching out means taking the top 10cm off your seedling. This will encourage a bushier foliage, and more flowers!
Spacing: 30cm apart (Wider spacing creates may help grow stronger and thicker stems).
Position: Full Sun
Days until germination: 7-21 days @ 15-25°C
Seed to Bloom: 8 - 12 weeks
Harvest: Petals just opening, but not yet flattened.
Number of Seeds: 30
Note: WA orders are sent weekly as they require quarantine inspections on arrival to WA
The below is a guide on which months to sow based on your climate
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What to plant by month in your climate zone. Get it as a free PDF here.
