SproutSmart
SproutSmart™ Intelligent Garden Sowing

Sonata Pink

Cosmos
Zone 13a Save Garden

Planting Schedule

Add Sonata Pink to your garden to build a schedule and get reminders.
Botanical illustration of Sonata Pink
50d to harvest

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.

Crop Dates

Growing note: In frost-free Zone 13a, grow this cool-season crop during the cooler dry season (October–February).
MilestoneDate
Start Indoors—
ClimateFrost-Free Climate
Transplant / Sow OutdoorsOct 1st
Harvest BeginsNov 20th
Harvest EndsFeb 28th

Crop Details

TraitValue
Days to Maturity50
Sun RequirementsFull SunFull sun
Growth HabitUpright
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)60
Min Night Temp (°F)50
Harden Off (days)Not Required

Today's Conditions

Outdoor planting for Sonata Pink in Zone 13a typically begins around 2026-10-01. Wait until soil reaches at least 60°F before transplanting Sonata Pink.

Garden Alerts

In frost-free Zone 13a, grow this cool-season crop during the cooler dry season (October–February).

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Frequently Asked Questions

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.
Botanical illustration of Sonata Pink

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.

Today's Conditions

Outdoor planting for Sonata Pink in Zone 13a typically begins around 2026-10-01. Wait until soil reaches at least 60°F before transplanting Sonata Pink.

Garden Alerts

In frost-free Zone 13a, 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

For best branching and lots of blooms, keep plants in full sun and pinch once when young (before flowering), while avoiding over-fertilizing with nitrogen.