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Sonata Mix

Family: Asteraceae Annual flowering plant
Zone 6b Save Garden

Planting Schedule

Add Sonata Mix to your garden to build a schedule and get reminders.

Feathery, airy blooms open like living confetti—silky petals in a joyful mix of warm sunset pinks, rosy reds, and sunlit golds, each flower held on sturdy stems for a long, graceful display.

Sonata Mix forms a tidy, upright plant with fine, fernlike foliage that makes every blossom look even more luminous. Ideal for fresh cut arrangements and vibrant garden borders, it’s a pollinator favorite that brings constant color from early summer into fall.

Light: Full SunMaturity: 60 DaysHabit: Upright

Botanical illustration of Sonata Mix

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

MilestoneDate
Start IndoorsDirect Sow
Last FrostApr 25th
Transplant / Sow OutdoorsApr 25th
Harvest BeginsJun 24th
Harvest EndsOct 16th

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)Not Required

Frequently Asked Questions

What pest or disease most commonly affects Cosmos bipinnatus, and how can I control it?
Cosmos bipinnatus is frequently troubled by aphids and by powdery mildew in humid spells. Check the undersides of leaves weekly and spray a strong jet of water or use insecticidal soap when you first see colonies; remove heavily mildewed leaves early to slow spread. Ensure full-sun airflow and avoid overhead watering so the foliage dries quickly.
How often should I water Cosmos bipinnatus during the main growing phase (after it establishes)?
Water to keep the soil evenly moist for the first week or two after germination, then shift to deep, less-frequent watering. During active growth, water about 1–2 times per week depending on heat, aiming for soil that’s slightly dry on top but not bone-dry underneath. In full sun, avoid daily shallow watering—Cosmos performs best when roots are encouraged to reach deeper moisture.
How do I know when Cosmos bipinnatus (Sonata Mix) is ready to harvest for cut flowers?
Harvest when the flower heads are fully open and brightly colored, with the center disk floret area clearly visible. Because Cosmos bipinnatus matures in about 60 days, begin cutting regularly once the first main blooms open, and continue harvesting every few days to trigger more branching and new buds. Cut in the morning and trim stems so they’re ready for a vase immediately.

Today's Conditions

Outdoor planting for Sonata Mix in Zone 6b typically begins around 2026-04-25. Wait until soil reaches at least 60°F before transplanting Sonata Mix.

Garden Alerts

In Zone 6b, the average last spring frost is around April 25. Watch soil temperature before transplanting Sonata Mix.

Today's Conditions

Outdoor planting for Sonata Mix in Zone 6b typically begins around 2026-04-25. Wait until soil reaches at least 60°F before transplanting Sonata Mix.

Garden Alerts

In Zone 6b, the average last spring frost is around April 25. Watch soil temperature before transplanting Sonata Mix.

Sowing Tips

Transplant Conditions

Wait until soil reaches 60°F and nights stay above 50°F before moving outdoors.

Expert Note

For best cut-flower stems, sow shallowly (or direct sow), keep evenly moist until established, then thin for airflow and feed lightly after flowering starts.