When to Plant Petunia in Big Bend, Wisconsin (53103)

Location

Big Bend, Wisconsin

ZIP Code

53103

USDA Zone

Last Frost

Saturday, April 25, 2026

📅 Planting Calendar

Start Seeds Indoors Saturday, February 14, 2026

Transplant Outdoors Saturday, May 9, 2026

Pro Tip: Start Petunia seeds indoors 10 weeks before your last frost date, then transplant outdoors around Saturday, May 9, 2026.

🌿 Plant Details

Scientific Name Petunia × hybrida

Days to Maturity 75 days

Mature Height 6-18"

Spread 18"

Type Annual

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

12" apart

🌱

Planting Depth

0.13" deep

Seeds typically germinate in 7-14 days

Ready to Plant Petunia in Big Bend?

Get your seeds now so they're ready by Saturday, February 14, 2026.

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🤝 Good Companions

TomatoBasilMarigold

⚠️ Avoid Planting Near

Fennel

Other Plants for Big Bend

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Growing Petunia in Zone 5b

Petunia (Petunia × hybrida) is a popular garden vegetable. In Big Bend, Wisconsin, which is in USDA Hardiness Zone 5b, you should start seeds indoors around Saturday, February 14, 2026.

Your average last frost date is Saturday, April 25, 2026. Plan to transplant your Petunia seedlings outdoors around Saturday, May 9, 2026, about 2 weeks after your last frost date.