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Illinois March Planting Calendar
What to plant, transplant, and harvest in Illinois this March
Zone 5spring
🌡️ Illinois Frost Dates
Average Last Spring Frost
April 15 - May 10
Average First Fall Frost
October 5 - October 25
🌾 Direct Sow Outdoors
Plant these seeds directly in your garden in March.
✅ March Garden Tasks for Illinois
1Start tomatoes indoors
2Direct sow peas and spinach (mild zones)
3Prepare garden beds
4Apply compost
📅 Full Year Calendar for Illinois
📍 March Calendar for Other States
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