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When to Plant Jicama in Lauderdale County, TN

Lauderdale County, Tennessee Zone 8a May

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Avg. last frost March 29
Avg. first frost November 2
Soil temp (4") 65°F
Watering Low
Pest pressure Moderate
Daylight 13.9 hrs
  1. Time to start jicama inside

    A seed-starting mix and a sunny window (or a grow light) are all you need. Keep soil warm — around 70°F — for fast germination.

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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.

Lauderdale County, Tennessee is in USDA Zone 8a. The average last spring frost is March 29 and the first fall frost is November 2, giving you a growing season of approximately 218 days.

At an elevation of 2,139 feet, Lauderdale County receives approximately 43 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94°F, providing good warmth for Jicama during the growing season.

Lauderdale County, TN (Zone 8a) Long season
218 days
Last Spring Frost March 29
218 growing days
First Fall Frost November 2
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Lauderdale County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (12 days to spare)
Start indoors: Jan 30 Transplant: Apr 3 🍅 Harvest: Aug 7 – Oct 16
Recommended (50%) ✓ Fits season (8 days to spare)
Start indoors: Feb 8 Transplant: Apr 12 🍅 Harvest: Aug 16 – Oct 25
Safe Start (90%) ✓ Fits season (12 days to spare)
Start indoors: Feb 25 Transplant: Apr 29 🍅 Harvest: Sep 2 – Nov 11

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.

Soil Compatibility in Lauderdale County

How your county's soil matches Jicama's growing requirements.

Soil pH

Your soil pH (5.7–6.8) overlaps with Jicama's range (6.0–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Lauderdale County is excellent for Jicama — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Jicama.

Organic Matter

Organic matter is moderate (3.0%). Annual compost additions will help Jicama.

How to Plant Jicama

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Jicama

Jicama needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Jicama Needs Rainfall You Supplement Action
Jan 4.1" 0" ❄️ Dormant
Feb 3.8" 0" ❄️ Dormant
Mar 4.3" 4" 0.3" 💧 Light watering
Apr 4.3" 3.7" 0.6" 💧 Light watering
May 4.3" 3.8" 0.5" 💧 Light watering
Jun 4.3" 3.4" 0.9" 💧 Light watering
Jul 4.3" 4.2" 0.1" 💧 Light watering
Aug 4.3" 3.7" 0.6" 💧 Light watering
Sep 4.3" 3.1" 1.2" 💧 Light watering
Oct 4.3" 2.6" 1.7" 💧 Light watering
Nov 4.3" 3.2" 1.1" 💧 Light watering
Dec 3.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Lauderdale County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Jicama Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Jicama needs ~3,075 GDD — county provides 4,469 GDD Excellent fit

Jicama Planting Timeline — Lauderdale County, TN

Jicama Planting Calendar

Activity When Date Range
Start Indoors February 8 Feb 8 – Feb 22
Transplant Outdoors April 12 Apr 12 – Apr 26
Direct Sow April 5 Apr 5 – Apr 26
Harvest August 16 Aug 16 – Oct 25

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

120–180 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

218 days in Lauderdale County

Growing Tips for Jicama in Lauderdale County

Direct sow Jicama outdoors after March 29 in Lauderdale County when soil has warmed and frost danger has passed.

Common pests for Jicama in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Jicama in Lauderdale County, TN?

Lauderdale County is in Zone 8a with an average last frost of March 29. Plan your Jicama planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lauderdale County, TN?

Lauderdale County, Tennessee is in USDA Hardiness Zone 8a. The average last spring frost is March 29 and first fall frost is November 2.

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Your Lauderdale County Garden Planner — Free

A 24-page printable planner built for Lauderdale County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Lauderdale County, TN. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.