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Surfinia Heavenly Blue

Family: Solanaceae Garden Petunia
Zone 6b Save Garden

Planting Schedule

Add Surfinia Heavenly Blue to your garden to build a schedule and get reminders.

Heavenly Blue spills in a velvety cascade of sky-to-indigo blooms, each trumpet opening like a soft watercolor splash against the trailing foliage.

Surfinia’s flowers carry a gentle, satin-like texture with a bright, luminous center that draws the eye from every angle, while the plant’s spreading habit quickly blankets containers and edges with continuous color. Ideal for hanging baskets, window boxes, and garden drifts where its long-lasting bloom show can be admired at every glance.

Light: Full SunMaturity: 70 DaysHabit: Spreading

Botanical illustration of Surfinia Heavenly Blue

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

Crop Dates

MilestoneDate
Start IndoorsFeb 14th
Last FrostApr 25th
Transplant / Sow OutdoorsJun 20th
Harvest BeginsAug 29th
Harvest EndsOct 16th

Crop Details

TraitValue
Days to Maturity70
Sun RequirementsFull SunFull sun
Growth HabitSpreading
Support NeededNone
Planting DepthSurface
Germination Temp (°F)75
Min Soil Temp (°F)55
Min Night Temp (°F)50
Harden Off (days)7

Frequently Asked Questions

What pest or disease most commonly hits Petunia (Petunia × atkinsiana), and how can I prevent and treat it?
A frequent issue is gray mold (Botrytis) during humid, crowded growth—look for gray, fuzzy spots on leaves, buds, or flowers. Remove affected parts right away and improve airflow by spacing plants and avoiding overhead watering; water at the soil only. If it keeps recurring, use a labeled fungicide that’s approved for petunias and follow label timing, especially during wet weeks.
How often should I water Surfinia Heavenly Blue (Petunia × atkinsiana) during the main growing season?
During active bloom, water when the top 1 inch of potting mix (or the top few inches in a bed) feels dry—typically every day in hot weather and every 2–3 days in mild weather. Soak thoroughly until excess drains, then let the container/bed approach that dry level before watering again to prevent root problems. Petunias in hanging baskets dry faster, so check daily and adjust to keep the root zone evenly moist, not soggy.
How do I know when Surfinia Heavenly Blue is ready to harvest (or cut back)?
Petunia × atkinsiana isn’t harvested like a crop; instead, you “harvest” by deadheading or cutting back to keep flowering. Start deadheading once flowers fade (about 70 days after sowing/transplant depending on conditions) and remove spent blooms down to just above a healthy leaf cluster. For a major rejuvenation, cut back the plant by about one-third when bloom slows—new shoots typically resume flowering within 1–2 weeks.

Today's Conditions

Outdoor planting for Surfinia Heavenly Blue in Zone 6b typically begins around 2026-06-20. Wait until soil reaches at least 55°F before transplanting Surfinia Heavenly Blue.

Garden Alerts

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

Today's Conditions

Outdoor planting for Surfinia Heavenly Blue in Zone 6b typically begins around 2026-06-20. Wait until soil reaches at least 55°F before transplanting Surfinia Heavenly Blue.

Garden Alerts

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

Sowing Tips

Transplant Conditions

Wait until soil reaches 55°F and nights stay above 50°F before moving outdoors. Harden off for 7 days first.

Expert Note

Start petunias early under steady warmth and transplant only after nights are reliably mild to avoid chilling and stalled growth.