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When to Plant Lavender in Shelby County, TN

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.

Shelby County, Tennessee is in USDA Zone 7b. The average last spring frost is March 21 and the first fall frost is November 5, giving you a growing season of approximately 229 days.

At an elevation of 3,465 feet, Shelby County receives approximately 45.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89ยฐF, providing good warmth for Lavender during the growing season.

Shelby County, TN (Zone 7b) Long season
229 days
Last Spring Frost March 21
229 growing days
First Fall Frost November 5

Shelby County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (1 days to spare)
Transplant: Mar 21 🍅 Harvest: Jun 20 – Oct 31
Recommended (50%) ✗ May not fit
Transplant: Mar 28 🍅 Harvest: Jun 27 – Nov 7
Safe Start (90%) ✗ May not fit
Transplant: Apr 17 🍅 Harvest: Jul 17 – Nov 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.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Lavender needs ~2,429 GDD — county provides 3,835 GDD Excellent fit

Lavender Planting Timeline โ€” Shelby County, TN

Lavender Planting Calendar

Activity When Date Range
Transplant Outdoors March 28 Mar 28 โ€“ Apr 11
Harvest June 27 Jun 27 โ€“ Nov 7

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 Harvest
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

229 days

Growing Tips for Shelby 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 Shelby County, TN?

Shelby County is in Zone 7b with an average last frost of March 21. Plan your Lavender planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Shelby County, TN?

Shelby County, Tennessee is in USDA Hardiness Zone 7b. The average last spring frost is March 21 and first fall frost is November 5.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Shelby 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 Shelby County, TN. Local conditions may vary. Last updated: April 2026.