When to Plant Catnip in Johnstown, Pennsylvania (15906)

Location

Johnstown, Pennsylvania

ZIP Code

15906

USDA Zone

Last Frost

Wednesday, April 15, 2026

📅 Planting Calendar

Start Seeds Indoors Wednesday, February 18, 2026

Transplant Outdoors Wednesday, April 29, 2026

Pro Tip: Start Catnip seeds indoors 8 weeks before your last frost date, then transplant outdoors around Wednesday, April 29, 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 Johnstown?

Get your seeds now so they're ready by Wednesday, February 18, 2026.

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TomatoPepperSquashPumpkin

Other Plants for Johnstown

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Growing Catnip in Zone 6b

Catnip (Nepeta cataria) is a popular garden vegetable. In Johnstown, Pennsylvania, which is in USDA Hardiness Zone 6b, you should start seeds indoors around Wednesday, February 18, 2026.

Your average last frost date is Wednesday, April 15, 2026. Plan to transplant your Catnip seedlings outdoors around Wednesday, April 29, 2026, about 2 weeks after your last frost date.