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When to Plant Jicama in Russell County, AL

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.

Russell County, Alabama is in USDA Zone 8a. The average last spring frost is March 21 and the first fall frost is November 10, giving you a growing season of approximately 234 days.

At an elevation of 81 feet, Russell County receives approximately 50.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96ยฐF, so Jicama may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Jicama, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Jicama root diseases.

Russell County, AL (Zone 8a) Long season
234 days
Last Spring Frost March 21
234 growing days
First Fall Frost November 10

Russell County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (29 days to spare)
Start indoors: Jan 17 Transplant: Mar 21 🍅 Harvest: Jul 25 – Oct 3
Recommended (50%) ✓ Fits season (24 days to spare)
Start indoors: Jan 31 Transplant: Apr 4 🍅 Harvest: Aug 8 – Oct 17
Safe Start (90%) ✓ Fits season (14 days to spare)
Start indoors: Feb 27 Transplant: May 1 🍅 Harvest: Sep 4 – Nov 13

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
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 180 gal / 100 sq ft
Jicama needs ~3,300 GDD — county provides 5,148 GDD Excellent fit

Jicama Planting Timeline โ€” Russell County, AL

Jicama Planting Calendar

Activity When Date Range
Start Indoors January 31 Jan 31 โ€“ Feb 14
Transplant Outdoors April 4 Apr 4 โ€“ Apr 18
Direct Sow March 28 Mar 28 โ€“ Apr 18
Harvest August 8 Aug 8 โ€“ Oct 17

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Start Indoors
March Direct Sow
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 8a

Growing Season

234 days

Growing Tips for Russell 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 Russell County, AL?

Russell County is in Zone 8a with an average last frost of March 21. Plan your Jicama planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Russell County, AL?

Russell County, Alabama is in USDA Hardiness Zone 8a. The average last spring frost is March 21 and first fall frost is November 10.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Russell County gardeners in Zone 8a 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 Russell County, AL. Local conditions may vary. Last updated: April 2026.