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When to Plant Turnip in La Crosse County, WI

Turnips are a fast-growing cool-season root vegetable with edible roots and greens. Baby turnips are sweet and tender while mature ones are more pungent.

La Crosse County, Wisconsin is in USDA Zone 4b. The average last spring frost is May 4 and the first fall frost is October 5, giving you a growing season of approximately 154 days.

At an elevation of 1,054 feet, La Crosse County receives approximately 41.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83ยฐF, so choose short-season varieties of Turnip to ensure they mature before fall.

La Crosse County, WI (Zone 4b) Moderate season
154 days
Last Spring Frost May 4
154 growing days
First Fall Frost October 5

La Crosse County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (80 days to spare)
Transplant: Apr 27 🍅 Harvest: Jun 8 – Jul 13
Recommended (50%) ✓ Fits season (77 days to spare)
Transplant: May 4 🍅 Harvest: Jun 15 – Jul 20
Safe Start (90%) ✓ Fits season (72 days to spare)
Transplant: May 20 🍅 Harvest: Jul 1 – Aug 5

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Turnip needs ~612 GDD — county provides 1,886 GDD Excellent fit

Turnip Planting Timeline โ€” La Crosse County, WI

Turnip Planting Calendar

Activity When Date Range
Direct Sow April 27 Apr 27 โ€“ May 18
Fall Sowing July 13 Jul 13 โ€“ Jul 27
Harvest June 8 Jun 8 โ€“ Jul 13

Plant 0.5" deep ยท 4" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Direct Sow
May Direct Sow
June Harvest
July Fall Sowing Harvest
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

40โ€“60 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 4b

Growing Season

154 days

Growing Tips for La Crosse County

Direct sow in early spring or late summer. Harvest when roots are 2-3 inches in diameter for best flavor. Both the roots and the greens are nutritious and edible.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Turnip in La Crosse County, WI?

La Crosse County is in Zone 4b with an average last frost of May 4. Plan your Turnip planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is La Crosse County, WI?

La Crosse County, Wisconsin is in USDA Hardiness Zone 4b. The average last spring frost is May 4 and first fall frost is October 5.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help La Crosse County gardeners in Zone 4b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for La Crosse County, WI. Local conditions may vary. Last updated: April 2026.