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Wisconsin September Planting Calendar
What to plant, transplant, and harvest in Wisconsin this September
Zone 4fall
🌡️ Wisconsin Frost Dates
Average Last Spring Frost
April 25 - June 1
Average First Fall Frost
September 15 - October 15
🥕 Harvest This Month
These crops should be ready to harvest in Wisconsin this September.
✅ September Garden Tasks for Wisconsin
1Plant cover crops
2Harvest storage crops
3Direct sow spinach
4Prepare cold frames
📅 Full Year Calendar for Wisconsin
📍 September Calendar for Other States
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