SproutSmart
SproutSmart Intelligent Garden Sowing

Sensation Mixed

Cosmos

Planting Schedule

Add Sensation Mixed to your garden to build a schedule and get reminders.
Botanical illustration of Sensation Mixed
60d to harvest

Feathery, airy blooms arrive in a dazzling spectrum—silk-petaled flowers that seem to glow in warm sunset tones and cool jewel shades. Sensation Mixed cosmos produces long, slender stems with a light, graceful texture, making each planting feel like a living bouquet from the first open bloom. Grow it for abundant cut-flower display and for a garden that stays in motion with color all season long.

Crop Dates

Growing note: In frost-free Zone 10b, grow this cool-season crop during the cooler dry season (October–February).
MilestoneDate
Start Indoors
ClimateFrost-Free Climate
Transplant / Sow OutdoorsOct 1st
Harvest BeginsNov 30th
Harvest EndsFeb 28th

Crop Details

TraitValue
Days to Maturity60
Sun RequirementsFull SunFull sun
Growth HabitUpright
Support NeededNone
Planting DepthSurface
Germination Temp (°F)70
Min Soil Temp (°F)60
Min Night Temp (°F)50
Harden Off (days)Not Required

Frequently Asked Questions


What pest or disease problem commonly affects Cosmos bipinnatus (Cosmos Sensation), and how can I manage it at home?
Cosmos bipinnatus is prone to powdery mildew, especially in humid weather and when plants are crowded. Water at the base to keep foliage dry, space plants so air can circulate, and remove badly affected leaves early. If mildew persists, spray with a garden-safe potassium bicarbonate product and reapply according to label directions.
How do I tell when Cosmos bipinnatus (Cosmos Sensation) is ready to harvest for cut flowers?
Harvest when the flower heads are fully colored and the central disk florets are open, but before they start turning brown and forming seed. Cut stems early in the morning and choose blooms with sturdy, fresh foliage for the longest vase life. For continuous flowering, remove spent heads promptly so the plant keeps producing new buds.
Botanical illustration of Sensation Mixed

Feathery, airy blooms arrive in a dazzling spectrum—silk-petaled flowers that seem to glow in warm sunset tones and cool jewel shades. Sensation Mixed cosmos produces long, slender stems with a light, graceful texture, making each planting feel like a living bouquet from the first open bloom. Grow it for abundant cut-flower display and for a garden that stays in motion with color all season long.