What to Plant in September in Washington DC

Your September planting guide for Washington DC (USDA Zones 7–8, typically Zone 7). We've broken out activities by zone — jump to yours below.

Growing season varies across Zones 7–8 — 210–240 days. Pick the zone that matches your part of the state.

Zone 7 — September in Washington DC★ Most of DC

903 varieties active · Last frost April 1 · 210-day season

🏠 Indoor 57🧺 Harvest 903

Full Zone 7 guide →

Ace 55

Tomatoes · 80-85d

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Ace 56

Tomatoes · 70-75d

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Acorn Squash (Table Queen)

Squash & Cucumbers · 85-100d

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Ailsa Craig Onion

Root Vegetables · 110d

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Ailsa Craig Sweet Onion

Alliums · 110-120d

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Aji Dulce 'Venezuelan Sweet'

Peppers · 85-95d

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Albion

Root Vegetables · 120d

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Alderman

Peas · 70-80d

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+ 895 more Zone 7 varieties for September →

Zone 8 — September in Washington DC

780 varieties active · Last frost March 15 · 240-day season

🏠 Indoor 57🧺 Harvest 780

Full Zone 8 guide →

Ace 55

Tomatoes · 80-85d

🧺

Acorn Squash (Table Queen)

Squash & Cucumbers · 85-100d

🧺

Ailsa Craig Onion

Root Vegetables · 110d

🧺

Ailsa Craig Sweet Onion

Alliums · 110-120d

🧺

Aji Dulce 'Venezuelan Sweet'

Peppers · 85-95d

🧺

Albion

Root Vegetables · 120d

🧺

Alderman

Peas · 70-80d

🧺

Alexandria

Berries & Fruits · 100-120d

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+ 772 more Zone 8 varieties for September →