Double Click

Family: Asteraceae Annual flowering plant

Planting Schedule

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Velvety, petal-bright blooms open like confetti against airy green—Double Click delivers a lush, fully double cosmos that feels almost plush at first glance.

Expect rich color with a dense, layered rosette of petals and a graceful, upright habit that holds its charm from bud to bloom, making it a standout in bouquets and garden beds alike. Grow it for long-lasting showy flowers that sway with the breeze and invite repeated admiration all season long.

Light: Full SunMaturity: 70 DaysHabit: Upright

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Double Click Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Protected Environment Only
Zone 2a	Apr 27th	May 25th	Aug 3rd – Aug 29th
Zone 2b	Apr 17th	May 15th	Jul 24th – Aug 25th
Zone 3a	Apr 17th	May 15th	Jul 24th – Sep 1st
Zone 3b	Apr 21st	May 19th	Jul 28th – Sep 21st
Zone 4a	Apr 17th	May 15th	Jul 24th – Sep 24th
Zone 4b	Apr 15th	May 13th	Jul 22nd – Sep 27th
Zone 5a	Apr 10th	May 8th	Jul 17th – Sep 30th
Zone 5b	Apr 6th	May 4th	Jul 13th – Oct 5th
Zone 6a	Apr 3rd	May 1st	Jul 10th – Oct 10th
Zone 6b	Mar 28th	Apr 25th	Jul 4th – Oct 16th
Zone 7a	Mar 23rd	Apr 20th	Jun 29th – Oct 20th
Zone 7b	Mar 13th	Apr 10th	Jun 19th – Oct 28th
Zone 8a	Mar 4th	Apr 1st	Jun 10th – Nov 5th
Zone 8b	Feb 23rd	Mar 23rd	Jun 1st – Nov 12th
Zone 9a	Feb 6th	Mar 6th	May 15th – Nov 26th
Zone 9b	Jan 12th	Feb 9th	Apr 20th – Dec 9th
Zone 10a	—	Oct 1st	Dec 10th – Feb 28th
Zone 10b	—	Oct 1st	Dec 10th – Feb 28th
Zone 11a	—	Oct 1st	Dec 10th – Feb 28th
Zone 11b	—	Oct 1st	Dec 10th – Feb 28th
Zone 12a	—	Oct 1st	Dec 10th – Feb 28th
Zone 12b	—	Oct 1st	Dec 10th – Feb 28th
Zone 13a	—	Oct 1st	Dec 10th – Feb 28th
Zone 13b	—	Oct 1st	Dec 10th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	70
Min Soil Temp (°F)	55
Min Night Temp (°F)	45
Harden Off (days)	7

Frequently Asked Questions

What pest or disease commonly affects Cosmos bipinnatus (double click cosmos), and how can I control it?

A frequent problem is powdery mildew, which shows up as a white, dusty coating on leaves during warm, humid spells. Improve airflow by spacing plants (or thinning seedlings) and water the soil rather than the foliage; remove heavily infected leaves to slow spread. If mildew is recurring, use a labeled sulfur or potassium bicarbonate spray per the product directions, starting as soon as you see the first patches.

How often should I water Cosmos bipinnatus during the main growing phase?

During active growth and bud formation, keep the soil evenly moist but not soggy—water when the top 1–2 inches of soil feel dry. Cosmos bipinnatus is fairly drought-tolerant once established, so avoid frequent light watering that keeps the surface wet; deep watering encourages stronger roots. After plants start blooming well, you can slightly reduce frequency, watering only when the top layer dries.

How do I know when Cosmos bipinnatus is ready to harvest?

Harvest for cut flowers when the outer petals are fully opened and the center disc is mature but not yet dried out. If you’re harvesting seed, let flowers fully dry on the plant until the seed heads turn tan/brown and feel crisp, then collect the dry seeds. Cosmos typically reaches maturity in about 70 days, but harvest timing is best judged by flower opening stage (for blooms) or seed-head dryness (for seed).