When to Plant Hollyhock in Richmond Hill, New York (11418)

Location

Richmond Hill, New York

ZIP Code

11418

USDA Zone

Last Frost

Sunday, April 5, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, February 22, 2026

Transplant Outdoors Sunday, April 19, 2026

Pro Tip: Start Hollyhock seeds indoors 6 weeks before your last frost date, then transplant outdoors around Sunday, April 19, 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 Richmond Hill?

Get your seeds now so they're ready by Sunday, February 22, 2026.

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Growing Hollyhock in Zone 7b

Hollyhock (Alcea rosea) is a popular garden vegetable. In Richmond Hill, New York, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, February 22, 2026.

Your average last frost date is Sunday, April 5, 2026. Plan to transplant your Hollyhock seedlings outdoors around Sunday, April 19, 2026, about 2 weeks after your last frost date.