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When to Plant Jicama in Sabine County, TX

Sabine County, Texas Zone 9a May

Sabine County, Texas gardeners: here's your May plan

Your garden in Sabine County, Texas is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost March 12
Avg. first frost November 15
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.6 hrs

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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.

Sabine County, Texas is in USDA Zone 9a. The average last spring frost is March 12 and the first fall frost is November 15, giving you a growing season of approximately 248 days.

At an elevation of 265 feet, Sabine County receives approximately 63.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 93°F, providing good warmth for Jicama during the growing season. Sandy soil warms quickly in spring — great for early planting — but Jicama will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Jicama root diseases.

Sabine County, TX (Zone 9a) Long season
248 days
Last Spring Frost March 12
248 growing days
First Fall Frost November 15

Sabine County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.6-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (45 days to spare)
Start indoors: Jan 21 Transplant: Mar 11 🍅 Harvest: Jul 15 – Sep 23
Recommended (50%) ✓ Fits season (45 days to spare)
Start indoors: Jan 29 Transplant: Mar 19 🍅 Harvest: Jul 23 – Oct 1
Safe Start (90%) ✓ Fits season (35 days to spare)
Start indoors: Feb 24 Transplant: Apr 14 🍅 Harvest: Aug 18 – Oct 27

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 Sabine County

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

Soil pH

Your soil pH (5.6–6.5) overlaps with Jicama's range (6.0–7.5), though not a perfect match.

Soil Texture

Sandy soil in Sabine County warms quickly in spring but drains fast. Jicama will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Jicama.

Organic Matter

Organic matter is low (1.8%). Add 2-3 inches of compost before planting 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
1.1″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 599 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 1.7" 0" ❄️ Dormant
Feb 2.1" 0" ❄️ Dormant
Mar 4.3" 4.6" 0" ✅ Rainfall sufficient
Apr 4.3" 5.9" 0" ✅ Rainfall sufficient
May 4.3" 9" 0" ✅ Rainfall sufficient
Jun 4.3" 9.7" 0" ✅ Rainfall sufficient
Jul 4.3" 9" 0" ✅ Rainfall sufficient
Aug 4.3" 8.1" 0" ✅ Rainfall sufficient
Sep 4.3" 6" 0" ✅ Rainfall sufficient
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 2.4" 1.9" 💧 Light watering
Dec 1.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Sabine 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 ~2,962 GDD — county provides 4,898 GDD Excellent fit

Jicama Planting Timeline — Sabine County, TX

Jicama Planting Calendar

Activity When Date Range
Start Indoors January 29 Jan 29 – Feb 12
Transplant Outdoors March 19 Mar 19 – Apr 2
Direct Sow March 12 Mar 12 – Apr 2
Harvest July 23 Jul 23 – Oct 1

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

120–180 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

248 days in Sabine County

Growing Tips for Jicama in Sabine County

Direct sow Jicama outdoors after March 12 in Sabine County when soil has warmed and frost danger has passed.

Sandy soil in Sabine County dries quickly — mulch Jicama with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Sabine County, TX?

Sabine County is in Zone 9a with an average last frost of March 12. Plan your Jicama planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sabine County, TX?

Sabine County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is March 12 and first fall frost is November 15.

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Your Sabine County Garden Planner — Free

A 24-page printable planner built for Sabine County (Zone 9a). 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 Sabine County, TX. 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.