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When to Plant Lavender in Humphreys 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.

Humphreys County, Tennessee is in USDA Zone 7a. The average last spring frost is April 5 and the first fall frost is October 29, giving you a growing season of approximately 207 days.

At an elevation of 2,413 feet, Humphreys County receives approximately 49.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 92ยฐF, providing good warmth for Lavender during the growing season.

Humphreys County, TN (Zone 7a) Long season
207 days
Last Spring Frost April 5
207 growing days
First Fall Frost October 29

Humphreys County Soil Profile

Soil Type

Silt Loam

Soil pH

5.8-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Apr 4 🍅 Harvest: Jul 4 – Nov 14
Recommended (50%) ✗ May not fit
Transplant: Apr 12 🍅 Harvest: Jul 12 – Nov 22
Safe Start (90%) ✗ May not fit
Transplant: Apr 25 🍅 Harvest: Jul 25 – Dec 5

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
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Lavender needs ~2,755 GDD — county provides 3,933 GDD Excellent fit

Lavender Planting Timeline โ€” Humphreys County, TN

Lavender Planting Calendar

Activity When Date Range
Transplant Outdoors April 12 Apr 12 โ€“ Apr 26
Harvest July 12 Jul 12 โ€“ Nov 22

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Transplant Outdoors
May โ€”
June โ€”
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 7a

Growing Season

207 days

Growing Tips for Humphreys 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 Humphreys County, TN?

Humphreys County is in Zone 7a with an average last frost of April 5. Plan your Lavender planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Humphreys County, TN?

Humphreys County, Tennessee is in USDA Hardiness Zone 7a. The average last spring frost is April 5 and first fall frost is October 29.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Humphreys County gardeners in Zone 7a 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 Humphreys County, TN. Local conditions may vary. Last updated: April 2026.