SproutSmart
SproutSmart Intelligent Garden Sowing

Sensation White

Cosmos

Planting Schedule

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

Purest cloud-white blooms with a luminous, velvety center—Sensation White Cosmos turns sunlight into a soft halo from early summer through the first cool days. Each airy, daisy-like flower carries a crisp, paper-thin petal texture that moves beautifully in the breeze, while the finely divided foliage forms a delicate, fernlike backdrop. Ideal for pollinator-friendly gardens, it shines in mass plantings, borders, and cut-flower displays where its clean color and long-lasting bloom rhythm are the main attraction.

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 DepthNormal
Germination Temp (°F)75
Min Soil Temp (°F)60
Min Night Temp (°F)50
Harden Off (days)7

Frequently Asked Questions


How often should I water Cosmos bipinnatus during the main growing phase?
During active growth and flowering, water deeply about 1–2 times per week, letting the top 1 inch of soil dry between waterings. Cosmos tolerate some drought once established, so avoid keeping the soil constantly wet. If plants wilt in the heat but recover by evening, water thoroughly rather than lightly and frequently.
How can I tell when Cosmos bipinnatus (Sensation White) is ready to harvest?
Harvest for fresh cut flowers when the ray florets are fully open and the center disk is mature but not yet browning. For seed, leave heads on the plant until the flower heads dry and turn tan/brown; then cut when seeds feel firm. At about 60 days from sowing, many plants will be in the first bloom window for cut flowers under full sun.
Botanical illustration of Sensation White

Purest cloud-white blooms with a luminous, velvety center—Sensation White Cosmos turns sunlight into a soft halo from early summer through the first cool days. Each airy, daisy-like flower carries a crisp, paper-thin petal texture that moves beautifully in the breeze, while the finely divided foliage forms a delicate, fernlike backdrop. Ideal for pollinator-friendly gardens, it shines in mass plantings, borders, and cut-flower displays where its clean color and long-lasting bloom rhythm are the main attraction.