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When to Plant Lavender in Coleman County, TX

Coleman County, Texas Zone 8a May

Your May planting checklist for Coleman County, Texas

We've pulled the most time-sensitive tasks for Coleman County, Texas this May and put them front and centre. Tackle them in order.

Avg. last frost March 17
Avg. first frost November 16
Soil temp (4") 67°F
Watering Low
Pest pressure Moderate
Daylight 13.6 hrs
To set up a strong June, finish these tasks
  • First harvests: lavender

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Lavender is a fragrant perennial herb with silvery foliage and purple flower spikes. It is prized for its essential oils, culinary uses, and ornamental beauty.

Coleman County, Texas is in USDA Zone 8a. The average last spring frost is March 17 and the first fall frost is November 16, giving you a growing season of approximately 244 days.

At an elevation of 1,129 feet, Coleman County receives approximately 59.4 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Lavender during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lavender root diseases.

Coleman County, TX (Zone 8a) Long season
244 days
Last Spring Frost March 17
244 growing days
First Fall Frost November 16

Coleman County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 15 🍅 Harvest: Jun 14 – Nov 15
Recommended (50%) ✗ May not fit
Transplant: Mar 24 🍅 Harvest: Jun 23 – Nov 24
Safe Start (90%) ✗ May not fit
Transplant: Apr 15 🍅 Harvest: Jul 15 – Dec 16

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 Coleman County

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

Soil pH

Your soil pH (6.3–7.7) overlaps with Lavender's range (6.5–8.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Lavender.

How to Plant Lavender

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

Plant Water Budget

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

Monthly Watering Guide for Lavender

Lavender needs approximately 0.3 inches of water per week (1.3" per month). Here's how your county's rainfall compares month by month.

Month Lavender Needs Rainfall You Supplement Action
Jan 1.4" 0" ❄️ Dormant
Feb 2.2" 0" ❄️ Dormant
Mar 1.3" 4.3" 0" ✅ Rainfall sufficient
Apr 1.3" 6.4" 0" ✅ Rainfall sufficient
May 1.3" 7.8" 0" ✅ Rainfall sufficient
Jun 1.3" 9.7" 0" ✅ Rainfall sufficient
Jul 1.3" 7.7" 0" ✅ Rainfall sufficient
Aug 1.3" 7.7" 0" ✅ Rainfall sufficient
Sep 1.3" 5.1" 0" ✅ Rainfall sufficient
Oct 1.3" 3.3" 0" ✅ Rainfall sufficient
Nov 1.3" 2" 0" ✅ Rainfall sufficient
Dec 1.7" 0" ❄️ Dormant

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

Lavender 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.

Lavender needs ~2,538 GDD — county provides 4,270 GDD Excellent fit

Lavender Planting Timeline — Coleman County, TX

Lavender Planting Calendar

Activity When Date Range
Transplant Outdoors March 24 Mar 24 – Apr 7
Harvest June 23 Jun 23 – Nov 24

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.3"/week · Natural rainfall sufficient

📅 Days to Maturity

90–200 days

🧪 Soil pH

Needs 6.5–8 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

244 days in Coleman County

Growing Tips for Lavender in Coleman County

Direct sow Lavender outdoors after March 17 in Coleman County when soil has warmed and frost danger has passed.

With 59" of annual rainfall in Coleman County, ensure good drainage for Lavender — excess moisture can promote root rot and fungal diseases.

General growing tips

Plant in well-drained, sandy soil. Avoid heavy mulching around the crown. Prune after flowering but do not cut into old wood. Lavender resents wet winter conditions.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Lavender in Coleman County, TX?

Coleman County is in Zone 8a with an average last frost of March 17. Plan your Lavender planting based on this frost date — see the calendar above for exact timing.

What planting zone is Coleman County, TX?

Coleman County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 17 and first fall frost is November 16.

🌱

Your Coleman County Garden Planner — Free

A 24-page printable planner built for Coleman 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 Coleman 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.