When to Plant Catnip in Old Harbor, Alaska (99643)

Location

Old Harbor, Alaska

ZIP Code

99643

USDA Zone

Last Frost

Sunday, April 5, 2026

📅 Planting Calendar

Start Seeds Indoors Sunday, February 8, 2026

Transplant Outdoors Sunday, April 19, 2026

Pro Tip: Start Catnip seeds indoors 8 weeks before your last frost date, then transplant outdoors around Sunday, April 19, 2026.

🌿 Plant Details

Scientific Name Nepeta cataria

Days to Maturity 90 days

Mature Height 18-36"

Spread 18"

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Low (less than 1 inch/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.125" deep

Seeds typically germinate in 7-14 days

Ready to Plant Catnip in Old Harbor?

Get your seeds now so they're ready by Sunday, February 8, 2026.

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Other Plants for Old Harbor

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Growing Catnip in Zone 7b

Catnip (Nepeta cataria) is a popular garden vegetable. In Old Harbor, Alaska, which is in USDA Hardiness Zone 7b, you should start seeds indoors around Sunday, February 8, 2026.

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