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When to Plant Jicama in Stone County, AR

Jicama is a tropical legume grown for its crisp, sweet, starchy root. It requires a very long, warm growing season but produces a refreshing, water chestnut-like tuber.

Stone County, Arkansas is in USDA Zone 7a. The average last spring frost is April 1 and the first fall frost is October 27, giving you a growing season of approximately 209 days.

At an elevation of 1,490 feet, Stone County receives approximately 48.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89ยฐF, providing good warmth for Jicama during the growing season.

Stone County, AR (Zone 7a) Long season
209 days
Last Spring Frost April 1
209 growing days
First Fall Frost October 27

Stone County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (0 days to spare)
Start indoors: Feb 5 Transplant: Apr 9 🍅 Harvest: Aug 13 – Oct 22
Recommended (50%) ✗ May not fit
Start indoors: Feb 11 Transplant: Apr 15 🍅 Harvest: Aug 19 – Oct 28
Safe Start (90%) ✗ May not fit
Start indoors: Mar 1 Transplant: May 3 🍅 Harvest: Sep 6 – Nov 15

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
1.0″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 43 gal / 100 sq ft
Drought risk

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

Jicama needs ~2,512 GDD — county provides 3,500 GDD Excellent fit

Jicama Planting Timeline โ€” Stone County, AR

Jicama Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 โ€“ Feb 25
Transplant Outdoors April 15 Apr 15 โ€“ Apr 29
Direct Sow April 8 Apr 8 โ€“ Apr 29
Harvest August 19 Aug 19 โ€“ Oct 28

Plant 0.5" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March โ€”
April Transplant Outdoors Direct Sow
May โ€”
June โ€”
July โ€”
August Harvest
September Harvest
October Harvest
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

120โ€“180 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 7a

Growing Season

209 days

Growing Tips for Stone County

Start seeds indoors 8-10 weeks before last frost. Pinch off flowers to direct energy to root development. Harvest before first frost when roots are 3-6 inches across.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Level Up Your Garden

Frequently Asked Questions

When should I plant Jicama in Stone County, AR?

Stone County is in Zone 7a with an average last frost of April 1. Plan your Jicama planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Stone County, AR?

Stone County, Arkansas is in USDA Hardiness Zone 7a. The average last spring frost is April 1 and first fall frost is October 27.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Stone 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 Stone County, AR. Local conditions may vary. Last updated: April 2026.