SproutSmart
SproutSmart™ Intelligent Garden Sowing

Cupcakes White

Cosmos
Zone 11a Save Garden

Planting Schedule

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

Delicate as spun lace, Cupcakes White blooms in airy, cloudlike clusters of pristine white petals that glow softly against finely divided foliage. The flowers open wide and hold their form with a crisp, satiny texture, making a luminous presence in beds and borders from early summer through the first cool days. Grow Cupcakes White for abundant ornamental color—ideal for fresh garden bouquets and long-lasting display.

Crop Dates

Growing note: In frost-free Zone 11a, 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)75
Min Soil Temp (°F)60
Min Night Temp (°F)50
Harden Off (days)7

Today's Conditions

Outdoor planting for Cupcakes White in Zone 11a typically begins around 2026-10-01. Wait until soil reaches at least 60°F before transplanting Cupcakes White.

Garden Alerts

In frost-free Zone 11a, grow this cool-season crop during the cooler dry season (October–February).

Recommended Companions

Red Gem Marigold
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Profusion Cherry Zinnia
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Sonata Mix Cosmos
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Xanthos Cosmos
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Zinnia Zinnia
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Taishan Yellow Marigold
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Frequently Asked Questions

What pest or disease commonly affects Cosmos bipinnatus, and how can I manage it at home?
Cosmos bipinnatus is prone to powdery mildew and leaf spotting in humid, crowded conditions. Water the soil (not the foliage), space plants with good airflow, and remove heavily affected leaves early; if it keeps spreading, spray a labeled powdery-mildew fungicide according to the label. Watch also for aphids on new growth and rinse them off with a strong jet of water or use insecticidal soap if needed.
How do I tell when Cosmos bipinnatus is ready to harvest?
Harvest flowers when the blossoms are fully open and the ray florets are crisp and brightly colored, typically around 60 days from sowing. For best vase quality, cut stems in the morning and choose blooms that are just opening or fully open—avoid those with wilted petals or browning centers. Continue cutting regularly to encourage more flowering through the season.
Botanical illustration of Cupcakes White

Delicate as spun lace, Cupcakes White blooms in airy, cloudlike clusters of pristine white petals that glow softly against finely divided foliage. The flowers open wide and hold their form with a crisp, satiny texture, making a luminous presence in beds and borders from early summer through the first cool days. Grow Cupcakes White for abundant ornamental color—ideal for fresh garden bouquets and long-lasting display.

Today's Conditions

Outdoor planting for Cupcakes White in Zone 11a typically begins around 2026-10-01. Wait until soil reaches at least 60°F before transplanting Cupcakes White.

Garden Alerts

In frost-free Zone 11a, grow this cool-season crop during the cooler dry season (October–February).

Sowing Tips

Soil Temperature

Direct sow or transplant when soil at planting depth holds 60°F for reliable germination and early growth.

Expert Note

Sow thinly and keep seedlings evenly moist—cosmos germinates best warm and flowers faster in full sun with minimal fertilizer.