Sonata Pink

Family: Asteraceae Annual flowering plant

Planting Schedule

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Velvety petals unfurl in a luminous wash of soft Sonata Pink, catching the light like spun silk and holding their color with graceful steadiness.

At maturity, blooms rise on airy, branching stems with a delicate, feathery texture that makes every bouquet feel light and abundant. Grow Sonata Pink for a long-lasting cut-flower display—ideal for fresh arrangements and for adding a romantic, airy note to garden borders.

Light: Full SunMaturity: 50 DaysHabit: Upright

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Sonata Pink 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	Direct Sow	Jun 1st	Jul 21st – Aug 1st
Zone 2a	Direct Sow	May 25th	Jul 14th – Aug 29th
Zone 2b	Direct Sow	May 15th	Jul 4th – Aug 25th
Zone 3a	Direct Sow	May 15th	Jul 4th – Sep 1st
Zone 3b	Direct Sow	May 19th	Jul 8th – Sep 21st
Zone 4a	Direct Sow	May 15th	Jul 4th – Sep 24th
Zone 4b	Direct Sow	May 13th	Jul 2nd – Sep 27th
Zone 5a	Direct Sow	May 8th	Jun 27th – Sep 30th
Zone 5b	Direct Sow	May 4th	Jun 23rd – Oct 5th
Zone 6a	Direct Sow	May 1st	Jun 20th – Oct 10th
Zone 6b	Direct Sow	Apr 25th	Jun 14th – Oct 16th
Zone 7a	Direct Sow	Apr 20th	Jun 9th – Oct 20th
Zone 7b	Direct Sow	Apr 10th	May 30th – Oct 28th
Zone 8a	Direct Sow	Apr 1st	May 21st – Nov 5th
Zone 8b	Direct Sow	Mar 23rd	May 12th – Nov 12th
Zone 9a	Direct Sow	Mar 6th	Apr 25th – Nov 26th
Zone 9b	Direct Sow	Feb 9th	Mar 31st – Dec 9th
Zone 10a	—	Oct 1st	Nov 20th – Feb 28th
Zone 10b	—	Oct 1st	Nov 20th – Feb 28th
Zone 11a	—	Oct 1st	Nov 20th – Feb 28th
Zone 11b	—	Oct 1st	Nov 20th – Feb 28th
Zone 12a	—	Oct 1st	Nov 20th – Feb 28th
Zone 12b	—	Oct 1st	Nov 20th – Feb 28th
Zone 13a	—	Oct 1st	Nov 20th – Feb 28th
Zone 13b	—	Oct 1st	Nov 20th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	50
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	Not Required

Frequently Asked Questions

How do I prevent and treat powdery mildew on Cosmos bipinnatus (Sonata Pink)?

Powdery mildew on Cosmos bipinnatus shows up as a white, dusty coating on leaves, usually when airflow is poor. Remove the worst leaves early and avoid wetting foliage when watering; water at the base in the morning. If it’s spreading, spray a potassium bicarbonate or horticultural soap product according to label directions and repeat as needed until new growth stays clean.

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

During the main growth (from emergence through the first flush of blooms), keep the soil evenly moist but not soggy—about 1 inch (2–3 cm) of water per week depending on heat. Let the top 1 inch of soil dry slightly between waterings, because Cosmos bipinnatus is prone to stem issues in constantly wet soil. Once established, you can taper to less frequent watering while maintaining light moisture for continued flowering.

What signs tell me Cosmos bipinnatus (Sonata Pink) is ready to harvest?

Cosmos bipinnatus is ready to harvest about 50 days from sowing, but use the blooms as the real cue. Harvest when flower heads are fully open and the centers look developed (not shrinking back), typically in the morning. For longest vase life, cut stems just above a leaf node and avoid harvesting after heavy rain when petals may bruise easily.