When to Plant Cabbage in Washington, District of Columbia (20413)

Location

Washington, District of Columbia

ZIP Code

20413

USDA Zone

Last Frost

Friday, March 20, 2026

📅 Planting Calendar

Start Seeds Indoors Friday, February 6, 2026

Transplant Outdoors Friday, March 20, 2026

Pro Tip: Start Cabbage seeds indoors 6 weeks before your last frost date, then transplant outdoors around Friday, March 20, 2026.

🌿 Plant Details

Scientific Name Brassica oleracea var. capitata

Days to Maturity 70 days

Mature Height 12-18"

Spread 24"

Type Head

Fruit Size Large (2-5 lb head)

☀️ Growing Requirements

☀️

Sun

Full Sun to Partial Shade

💧

Water

Regular (1-1.5 inches/week)

↔️

Spacing

18" apart

🌱

Planting Depth

0.5" deep

Seeds typically germinate in 4-10 days

Ready to Plant Cabbage in Washington?

Get your seeds now so they're ready by Friday, February 6, 2026.

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🤝 Good Companions

CeleryDillOnionPotatoChamomile

⚠️ Avoid Planting Near

StrawberryTomatoGrape

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Growing Cabbage in Zone 8a

Cabbage (Brassica oleracea var. capitata) is a popular garden vegetable. In Washington, District of Columbia, which is in USDA Hardiness Zone 8a, you should start seeds indoors around Friday, February 6, 2026.

Your average last frost date is Friday, March 20, 2026. Plan to transplant your Cabbage seedlings outdoors around Friday, March 20, 2026, about 0 weeks after your last frost date.