When to Plant Radicchio in Saint Petersburg, Florida (33708)

Location

Saint Petersburg, Florida

ZIP Code

33708

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Planting Calendar

Start Seeds Indoors Thursday, December 18, 2025

Transplant Outdoors Thursday, January 1, 2026

Pro Tip: Start Radicchio seeds indoors 4 weeks before your last frost date, then transplant outdoors around Thursday, January 1, 2026.

🌿 Plant Details

Scientific Name Cichorium intybus

Days to Maturity 80 days

Mature Height 6-12"

Spread 10"

Type Head

Fruit Size Small-Medium (fist-sized head)

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Regular (keep moist)

↔️

Spacing

10" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 5-10 days

Ready to Plant Radicchio in Saint Petersburg?

Get your seeds now so they're ready by Thursday, December 18, 2025.

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Growing Radicchio in Zone 10b

Radicchio (Cichorium intybus) is a popular garden vegetable. In Saint Petersburg, Florida, which is in USDA Hardiness Zone 10b, you should start seeds indoors around Thursday, December 18, 2025.

Your average last frost date is Thursday, January 15, 2026. Plan to transplant your Radicchio seedlings outdoors around Thursday, January 1, 2026, about -2 weeks after your last frost date.