When to Plant Napa Cabbage in Alum Bank, Pennsylvania (15521)

Location

Alum Bank, Pennsylvania

ZIP Code

15521

USDA Zone

Last Frost

Wednesday, April 15, 2026

📅 Planting Calendar

Start Seeds Indoors Wednesday, March 4, 2026

Transplant Outdoors Wednesday, April 29, 2026

Pro Tip: Start Napa Cabbage seeds indoors 6 weeks before your last frost date, then transplant outdoors around Wednesday, April 29, 2026.

🌿 Plant Details

Scientific Name Brassica rapa subsp. pekinensis

Days to Maturity 70 days

Mature Height 12-18"

Spread 12"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.25" deep

Seeds typically germinate in 4-7 days

Ready to Plant Napa Cabbage in Alum Bank?

Get your seeds now so they're ready by Wednesday, March 4, 2026.

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🤝 Good Companions

BeetOnionCeleryCucumber

⚠️ Avoid Planting Near

StrawberryTomatoPepper

Other Plants for Alum Bank

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Growing Napa Cabbage in Zone 6b

Napa Cabbage (Brassica rapa subsp. pekinensis) is a popular garden vegetable. In Alum Bank, Pennsylvania, which is in USDA Hardiness Zone 6b, you should start seeds indoors around Wednesday, March 4, 2026.

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