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When to Plant Lavender in Choctaw County, OK

Choctaw County, Oklahoma Zone 8a May

Choctaw County, Oklahoma gardeners: here's your May plan

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 18
Avg. first frost November 12
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
June will be here before you know it — start on
  • 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.

Choctaw County, Oklahoma is in USDA Zone 8a. The average last spring frost is March 18 and the first fall frost is November 12, giving you a growing season of approximately 239 days.

At an elevation of 576 feet, Choctaw County receives approximately 24.4 inches of rainfall annually with predominantly loam soil. Summer highs average 91°F, providing good warmth for Lavender during the growing season.

Choctaw County, OK (Zone 8a) Long season
239 days
Last Spring Frost March 18
239 growing days
First Fall Frost November 12
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Choctaw County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 14 🍅 Harvest: Jun 13 – Nov 14
Recommended (50%) ✗ May not fit
Transplant: Mar 25 🍅 Harvest: Jun 24 – Nov 25
Safe Start (90%) ✗ May not fit
Transplant: Apr 21 🍅 Harvest: Jul 21 – Dec 22

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 Choctaw County

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

Soil pH

Your soil pH (6.4–7.5) overlaps with Lavender's range (6.5–8.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Lavender.

Organic Matter

Organic matter is moderate (3.5%). 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
0.4″/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 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 0.6" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.3" 1.6" 0" ✅ Rainfall sufficient
Apr 1.3" 2.5" 0" ✅ Rainfall sufficient
May 1.3" 3.8" 0" ✅ Rainfall sufficient
Jun 1.3" 3.6" 0" ✅ Rainfall sufficient
Jul 1.3" 3.5" 0" ✅ Rainfall sufficient
Aug 1.3" 3" 0" ✅ Rainfall sufficient
Sep 1.3" 2.1" 0" ✅ Rainfall sufficient
Oct 1.3" 1.6" 0" ✅ Rainfall sufficient
Nov 1.3" 0.8" 0.5" 💧 Light watering
Dec 0.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Choctaw 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 ~2,646 GDD — county provides 4,361 GDD Excellent fit

Lavender Planting Timeline — Choctaw County, OK

Lavender Planting Calendar

Activity When Date Range
Transplant Outdoors March 25 Mar 25 – Apr 8
Harvest June 24 Jun 24 – Nov 25

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
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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

239 days in Choctaw County

Growing Tips for Lavender in Choctaw County

Direct sow Lavender outdoors after March 18 in Choctaw County when soil has warmed and frost danger has passed.

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 Choctaw County, OK?

Choctaw County is in Zone 8a with an average last frost of March 18. Plan your Lavender planting based on this frost date — see the calendar above for exact timing.

What planting zone is Choctaw County, OK?

Choctaw County, Oklahoma is in USDA Hardiness Zone 8a. The average last spring frost is March 18 and first fall frost is November 12.

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Your Choctaw County Garden Planner — Free

A 24-page printable planner built for Choctaw 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 Choctaw County, OK. 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.