What to Plant in September in Illinois
Your September planting guide for Illinois (USDA Zones 5–7, typically Zone 6). We've broken out activities by zone — jump to yours below.
Growing season varies across Zones 5–7 — 155–210 days. Pick the zone that matches your part of the state.
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57
Start Indoors
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0
Transplant Outdoors
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0
Direct Sow
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991
Harvest
Illinois · Zones 5–7
Zone 6 September guideZone 6 — September in Illinois★ Most of IL
978 varieties active · Last frost April 15 · 180-day season
🏠 Indoor 57🧺 Harvest 978
Zone 5 — September in Illinois
963 varieties active · Last frost April 30 · 155-day season
🏠 Indoor 57🧺 Harvest 963
Zone 7 — September in Illinois
903 varieties active · Last frost April 1 · 210-day season
🏠 Indoor 57🧺 Harvest 903
