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When to Plant Stevia in Wilbarger County, TX

Wilbarger County, Texas Zone 8a May

Your May planting checklist for Wilbarger County, Texas

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Wilbarger County, Texas.

Avg. last frost March 25
Avg. first frost November 10
Soil temp (4") 66°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
  1. Begin indoor sowing: stevia

    Starting these indoors now means sturdy transplants ready the moment your soil warms up.

A few tasks this May that'll pay off in June
  • First harvests: stevia

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Stevia is a subtropical herb whose leaves contain natural sweeteners 200-300 times sweeter than sugar. It is grown as an annual in most climates.

Wilbarger County, Texas is in USDA Zone 8a. The average last spring frost is March 25 and the first fall frost is November 10, giving you a growing season of approximately 230 days.

At an elevation of 1,980 feet, Wilbarger County receives approximately 51.9 inches of rainfall annually with predominantly loam soil. Summer highs average 93°F, providing good warmth for Stevia during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Stevia root diseases.

Wilbarger County, TX (Zone 8a) Long season
230 days
Last Spring Frost March 25
230 growing days
First Fall Frost November 10

Wilbarger County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (84 days to spare)
Start indoors: Jan 24 Transplant: Mar 28 🍅 Harvest: May 30 – Aug 8
Recommended (50%) ✓ Fits season (83 days to spare)
Start indoors: Feb 4 Transplant: Apr 8 🍅 Harvest: Jun 10 – Aug 19
Safe Start (90%) ✓ Fits season (76 days to spare)
Start indoors: Feb 25 Transplant: Apr 29 🍅 Harvest: Jul 1 – Sep 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.

Soil Compatibility in Wilbarger County

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

Soil pH

Your soil pH (6.2–7.6) overlaps with Stevia's range (6.5–7.5), though not a perfect match.

Soil Texture

The loam soil in Wilbarger County is excellent for Stevia — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.1%). Annual compost additions will help Stevia.

How to Plant Stevia

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Stevia

4
successive plantings in your 230-day season

Sow every 6.9 weeks. Last sowing by Aug 12 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
1.0″/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 Stevia

Stevia needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Stevia Needs Rainfall You Supplement Action
Jan 1.2" 0" ❄️ Dormant
Feb 1.5" 0" ❄️ Dormant
Mar 2.2" 3.4" 0" ✅ Rainfall sufficient
Apr 2.2" 5.3" 0" ✅ Rainfall sufficient
May 2.2" 8.7" 0" ✅ Rainfall sufficient
Jun 2.2" 7.8" 0" ✅ Rainfall sufficient
Jul 2.2" 7.1" 0" ✅ Rainfall sufficient
Aug 2.2" 5.6" 0" ✅ Rainfall sufficient
Sep 2.2" 4.9" 0" ✅ Rainfall sufficient
Oct 2.2" 3.3" 0" ✅ Rainfall sufficient
Nov 2.2" 1.5" 0.7" 💧 Light watering
Dec 1.5" 0" ❄️ Dormant

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

Stevia 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.

Stevia needs ~1,481 GDD — county provides 4,542 GDD Excellent fit

Stevia Planting Timeline — Wilbarger County, TX

Stevia Planting Calendar

Activity When Date Range
Start Indoors February 4 Feb 4 – Feb 18
Transplant Outdoors April 8 Apr 8 – Apr 22
Direct Sow April 1 Apr 1 – Apr 22
Harvest June 10 Jun 10 – Aug 19

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6.5–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

230 days in Wilbarger County

Growing Tips for Stevia in Wilbarger County

Direct sow Stevia outdoors after March 25 in Wilbarger County when soil has warmed and frost danger has passed.

Common pests for Stevia in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors under lights or buy transplants. Pinch flowers to encourage leaf production. Harvest leaves before flowering for maximum sweetness. Dry leaves for year-round use.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Stevia in Wilbarger County, TX?

Wilbarger County is in Zone 8a with an average last frost of March 25. Plan your Stevia planting based on this frost date — see the calendar above for exact timing.

What planting zone is Wilbarger County, TX?

Wilbarger County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 25 and first fall frost is November 10.

🌱

Your Wilbarger County Garden Planner — Free

A 24-page printable planner built for Wilbarger 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 Wilbarger 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.