Surfinia White

Petunia

Zone 13a Save Garden

Botanical illustration of Surfinia White

🌱 70d to harvest Spreading

Surfinia White pours out a cloud of pure, luminous white blossoms that glow softly against the trailing foliage—each flower a del…

Crop Dates

Milestone	Date
Start Indoors	Nov 6th
Last Frost	Jan 1st
Transplant / Sow Outdoors	Feb 26th
Harvest Begins	May 7th
Harvest Ends	—

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Spreading
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	75
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	7

Recommended Companions

Tango Red Bedding Geranium

Frequently Asked Questions

Why are my Petunia × atkinsiana (Surfinia White) plants getting gray patches or wilting, and what should I do?

Gray mold (Botrytis) often shows up as gray, fuzzy growth or spreading blotches when foliage stays wet and airflow is poor. Remove affected leaves, water at the soil line (not the petals), and space plants so leaves don’t touch. If it’s spreading quickly, apply a labeled fungicide for Botrytis on ornamentals and keep night foliage as dry as possible.

How often should I water Petunia × atkinsiana during the main growing season?

During active growth in full sun, water deeply when the top 1 inch of potting mix or soil feels dry—typically about 1–2 times per week, but hot weather containers may need more frequent watering. Water until excess drains from the bottom, then let the surface dry slightly before watering again to prevent root stress and disease. Consistently soggy mix can trigger fungal problems, while letting it fully dry repeatedly can cause flower drop and slowed growth.

How can I tell when Surfinia White (Petunia × atkinsiana) is ready to harvest?

Petunia × atkinsiana is usually harvested as flowers rather than as a single crop, so you harvest when blooms are fully open and well-colored (for Surfinia White, look for crisp white petals with intact centers). For longest season performance, pinch or snip spent flowers as soon as they fade to encourage new buds. If growing it for seed, let capsules mature fully on the plant (dried, tan pods) after the main flowering period—this is much later than the typical ~70 days to maturity for the plants themselves.

Surfinia White pours out a cloud of pure, luminous white blossoms that glow softly against the trailing foliage—each flower a delicate, velvety funnel with a crisp, clean presence. The plants spread with a tidy, cascading habit, forming a dense, cushiony drape that stays floriferous through the season. Ideal for hanging baskets, window boxes, and garden edges where its trailing cascade can be admired in full bloom.

Sowing Tips

Transplant Conditions

Wait until soil reaches 60°F and nights stay above 50°F before moving outdoors. Harden off for 7 days first.

Expert Note

Start petunias early indoors but transplant only after consistently warm weather, and keep plants on a regular feeding schedule for nonstop bloom.