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When to Plant Turnip in Marshall County, TN

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.

Marshall County, Tennessee is in USDA Zone 7a. The average last spring frost is April 10 and the first fall frost is October 24, giving you a growing season of approximately 197 days.

At an elevation of 3,469 feet, Marshall County receives approximately 41.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94ยฐF, providing good warmth for Turnip during the growing season.

Marshall County, TN (Zone 7a) Moderate season
197 days
Last Spring Frost April 10
197 growing days
First Fall Frost October 24

Marshall County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (121 days to spare)
Transplant: Apr 4 🍅 Harvest: May 16 – Jun 20
Recommended (50%) ✓ Fits season (120 days to spare)
Transplant: Apr 10 🍅 Harvest: May 22 – Jun 26
Safe Start (90%) ✓ Fits season (119 days to spare)
Transplant: Apr 23 🍅 Harvest: Jun 4 – Jul 9

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
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Turnip needs ~1,025 GDD — county provides 4,038 GDD Excellent fit

Turnip Planting Timeline โ€” Marshall County, TN

Turnip Planting Calendar

Activity When Date Range
Direct Sow March 27 Mar 27 โ€“ Apr 17
Fall Sowing August 15 Aug 15 โ€“ Aug 29
Harvest May 8 May 8 โ€“ Jun 12

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Direct Sow
April Direct Sow
May Harvest
June Harvest
July โ€”
August Fall Sowing
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 7a

Growing Season

197 days

Growing Tips for Marshall 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 Marshall County, TN?

Marshall County is in Zone 7a with an average last frost of April 10. Plan your Turnip planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Marshall County, TN?

Marshall County, Tennessee is in USDA Hardiness Zone 7a. The average last spring frost is April 10 and first fall frost is October 24.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Marshall County gardeners in Zone 7a 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 Marshall County, TN. Local conditions may vary. Last updated: April 2026.