Dazzler

Family: Asteraceae Annual flowering plant

Planting Schedule

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Dazzler Cosmos blooms with a radiant, candy-bright presence—silky petals that catch the light like spun satin and a warm, inviting center that seems to glow from within.

Expect airy, feathery foliage and long, sturdy stems that hold their poise from bud to full bloom, making this variety a standout for fresh arrangements and garden display. With its pollinator-attracting charm and dependable 55-day timeline, Dazzler is a joy to grow for color that feels effortless and abundant.

Light: Full SunMaturity: 55 DaysHabit: Upright

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Dazzler 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 26th – Aug 1st
Zone 2a	Direct Sow	May 25th	Jul 19th – Aug 29th
Zone 2b	Direct Sow	May 15th	Jul 9th – Aug 25th
Zone 3a	Direct Sow	May 15th	Jul 9th – Sep 1st
Zone 3b	Direct Sow	May 19th	Jul 13th – Sep 21st
Zone 4a	Direct Sow	May 15th	Jul 9th – Sep 24th
Zone 4b	Direct Sow	May 13th	Jul 7th – Sep 27th
Zone 5a	Direct Sow	May 8th	Jul 2nd – Sep 30th
Zone 5b	Direct Sow	May 4th	Jun 28th – Oct 5th
Zone 6a	Direct Sow	May 1st	Jun 25th – Oct 10th
Zone 6b	Direct Sow	Apr 25th	Jun 19th – Oct 16th
Zone 7a	Direct Sow	Apr 20th	Jun 14th – Oct 20th
Zone 7b	Direct Sow	Apr 10th	Jun 4th – Oct 28th
Zone 8a	Direct Sow	Apr 1st	May 26th – Nov 5th
Zone 8b	Direct Sow	Mar 23rd	May 17th – Nov 12th
Zone 9a	Direct Sow	Mar 6th	Apr 30th – Nov 26th
Zone 9b	Direct Sow	Feb 9th	Apr 5th – Dec 9th
Zone 10a	—	Oct 1st	Nov 25th – Feb 28th
Zone 10b	—	Oct 1st	Nov 25th – Feb 28th
Zone 11a	—	Oct 1st	Nov 25th – Feb 28th
Zone 11b	—	Oct 1st	Nov 25th – Feb 28th
Zone 12a	—	Oct 1st	Nov 25th – Feb 28th
Zone 12b	—	Oct 1st	Nov 25th – Feb 28th
Zone 13a	—	Oct 1st	Nov 25th – Feb 28th
Zone 13b	—	Oct 1st	Nov 25th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	55
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Dazzler cosmos reads more like a whisper than a punch—silk-thin petals and a gently honeyed center that dress best with bright acidity and chilled foods. Add at the last moment so the petals stay intact and don’t collapse into the bowl.

Best Uses

toss into mixed-greens salads right before serving to keep petals from wilting
use as an edible garnish on chilled seafood or citrusy crudo
fold into springy rice salads or grain bowls for pops of color and mild sweetness
float a few whole blooms or petals in cool drinks for visual impact and gentle floral flavor

Flavor Profile

lightly sweet, delicate petal flavor silky, airy mouthfeel with a subtle floral perfume warm, honeyed center notes

Kitchen Pairings

citrus (lemon or yuzu) seafood (oysters or shrimp) soft cheese (chèvre or ricotta) honey or simple syrup white wine or champagne vinegar

Frequently Asked Questions

What pest or disease most commonly affects Cosmos bipinnatus (Dazzler), and how do I control it?

Cosmos bipinnatus is especially prone to aphids and, in wet spells, powdery mildew. Spray affected plants with a strong jet of water to knock off aphids, then repeat every 2–3 days for a week; for mildew, improve airflow by thinning crowded growth and avoid wetting foliage when you water (early morning only). If mildew persists on new growth, use a labeled garden fungicide and remove heavily infected leaves.

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

During active growth (roughly from when seedlings establish until flowering), water deeply about 1–2 times per week so the top 1–2 inches of soil dry slightly between waterings. Cosmos bipinnatus tolerates some drought once established, so don’t keep the soil constantly wet—aim for even moisture, not soggy conditions. In hot weather, check more frequently, but still let the top layer dry before the next deep watering.

How can I tell when Dazzler (Cosmos bipinnatus) is ready to harvest?

Harvest for cut flowers when the flower heads are fully open and the petals are flat and vibrant, not still tightly closed. For seed harvest, wait until the flower head turns brown and dry and the individual seeds are firm before cutting the heads. Cosmos bipinnatus typically reaches maturity in about 55 days, so use that timing as a baseline and confirm by the flower’s stage.