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When to Plant Lavender in Grayson County, TX

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.

Grayson County, Texas is in USDA Zone 7b. The average last spring frost is March 14 and the first fall frost is November 18, giving you a growing season of approximately 249 days.

At an elevation of 248 feet, Grayson County receives approximately 71.2 inches of rainfall annually with predominantly loam soil. Summer highs average 88ยฐF, providing good warmth for Lavender during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lavender root diseases.

Grayson County, TX (Zone 7b) Long season
249 days
Last Spring Frost March 14
249 growing days
First Fall Frost November 18

Grayson County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (18 days to spare)
Transplant: Mar 13 🍅 Harvest: Jun 12 – Oct 23
Recommended (50%) ✓ Fits season (18 days to spare)
Transplant: Mar 21 🍅 Harvest: Jun 20 – Oct 31
Safe Start (90%) ✓ Fits season (1 days to spare)
Transplant: Apr 20 🍅 Harvest: Jul 20 – Nov 30

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.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
1.2″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Lavender needs ~2,320 GDD — county provides 3,984 GDD Excellent fit

Lavender Planting Timeline โ€” Grayson County, TX

Lavender Planting Calendar

Activity When Date Range
Transplant Outdoors March 21 Mar 21 โ€“ Apr 4
Harvest June 20 Jun 20 โ€“ Oct 31

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

90โ€“200 days

Soil pH

6.5 โ€“ 8

USDA Zone

Zone 7b

Growing Season

249 days

Growing Tips for Grayson County

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Lavender in Grayson County, TX?

Grayson County is in Zone 7b with an average last frost of March 14. Plan your Lavender planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Grayson County, TX?

Grayson County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 14 and first fall frost is November 18.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Grayson County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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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 Grayson County, TX. Local conditions may vary. Last updated: April 2026.