When to Plant Hollyhock in West Palm Beach, Florida (33421)

Location

West Palm Beach, Florida

ZIP Code

33421

USDA Zone

10b

Last Frost

Thursday, January 15, 2026

📅 Planting Calendar

Start Seeds Indoors Thursday, December 4, 2025

Transplant Outdoors Thursday, January 29, 2026

Pro Tip: Start Hollyhock seeds indoors 6 weeks before your last frost date, then transplant outdoors around Thursday, January 29, 2026.

🌿 Plant Details

Scientific Name Alcea rosea

Days to Maturity 365 days

Mature Height 48-96"

Spread 24"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Moderate (1 inch/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 10-14 days

Ready to Plant Hollyhock in West Palm Beach?

Get your seeds now so they're ready by Thursday, December 4, 2025.

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Growing Hollyhock in Zone 10b

Hollyhock (Alcea rosea) is a popular garden vegetable. In West Palm Beach, Florida, which is in USDA Hardiness Zone 10b, you should start seeds indoors around Thursday, December 4, 2025.

Your average last frost date is Thursday, January 15, 2026. Plan to transplant your Hollyhock seedlings outdoors around Thursday, January 29, 2026, about 2 weeks after your last frost date.