Planting Dates for Wisconsin
Wisconsin's dairy state tradition extends to strong home and market gardening. Lake Michigan and Lake Superior moderate temperatures in coastal areas, while inland regions have typical upper Midwest conditions.
USDA Zones 3b-5b • 115-165 frost-free days depending on location
Frost Dates in Wisconsin
Average last spring frost and first fall frost dates for Wisconsin cities. Use these to calculate your planting windows.
| City | Last Spring Frost | First Fall Frost | Frost-Free Days | USDA Zone |
|---|---|---|---|---|
| Milwaukee | Apr 25 | Oct 14 | 172 | 5b |
| Madison | Apr 28 | Oct 8 | 163 | 5b |
| Green Bay | May 6 | Oct 4 | 151 | 5a |
Gardening Tips for Wisconsin
- ✓Milwaukee and lakeshore gardens benefit from lake-moderated temperatures.
- ✓Northern Wisconsin has short seasons — use cold frames and row covers.
- ✓Wisconsin's loamy soils are naturally suited for root crops and potatoes.
- ✓Plan for last frost around May 10-20 in most areas.
What to Plant in Wisconsin
Cold-Hardy Crops (plant early)
These crops tolerate frost and can be planted 2-6 weeks before your last frost date.
30-60 days from sowing
55-70 days from sowing
60-80 days from sowing
50-70 days from sowing
55-80 days from transplant
35-50 days from sowing
20-35 days from sowing
July-August the following year
90-120 days from transplant
70-120 days from planting
50-70 days from sowing
50-60 days from sowing
Warm-Season Crops (plant after last frost)
Start these indoors and transplant after all frost danger has passed.
60-85 days from transplant
60-90 days from transplant
50-65 days from sowing
50-65 days from sowing
45-60 days from sowing
60-100 days from sowing
30-60 days from sowing
Get Exact Planting Dates for Wisconsin
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Frequently Asked Questions
When is the last frost date in Wisconsin?
Last frost dates in Wisconsin vary by city: Milwaukee (Apr 25), Madison (Apr 28), Green Bay (May 6).
What USDA hardiness zones are in Wisconsin?
Wisconsin spans USDA hardiness zones 3b-5b. Your specific zone determines which perennials survive winter and when to start planting annuals.
What vegetables grow best in Wisconsin?
Hardy crops like peas, kale, spinach, and garlic thrive across Wisconsin. In warmer zones, tomatoes, peppers, and cucumbers do well with proper timing. Use our free calculator for exact planting dates.
How long is the growing season in Wisconsin?
115-165 frost-free days depending on location. Extend your season with cold frames, row covers, and indoor seed starting.
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