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When to Plant Lavender in Glades County, FL

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.

Glades County, Florida is in USDA Zone 9b. The average last spring frost is February 1 and the first fall frost is December 19, giving you a growing season of approximately 321 days.

At an elevation of 434 feet, Glades County receives approximately 54.3 inches of rainfall annually with predominantly sand soil. Summer highs average 101ยฐF, so Lavender may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Lavender will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lavender root diseases.

Glades County, FL (Zone 9b) Year-round
321 days
Last Spring Frost February 1
321 growing days
First Fall Frost December 19

Glades County Soil Profile

Soil Type

Sand

Soil pH

5.1-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (67 days to spare)
Transplant: Jan 29 🍅 Harvest: Apr 30 – Oct 1
Recommended (50%) ✓ Fits season (69 days to spare)
Transplant: Feb 8 🍅 Harvest: May 10 – Oct 11
Safe Start (90%) ✓ Fits season (46 days to spare)
Transplant: Mar 8 🍅 Harvest: Jun 7 – Nov 8

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 Glades County

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

Soil pH

Your soil pH (5.1โ€“6.3) is more acidic than Lavender prefers (6.5โ€“8.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Glades County warms quickly in spring but drains fast. Lavender will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Lavender.

Organic Matter

Organic matter is low (1.6%). Add 2-3 inches of compost before planting 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
0.7″/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 โ€” 2.7" 0" โ„๏ธ Dormant
Feb 1.3" 2.5" 0" โœ… Rainfall sufficient
Mar 1.3" 2.9" 0" โœ… Rainfall sufficient
Apr 1.3" 2.7" 0" โœ… Rainfall sufficient
May 1.3" 3.5" 0" โœ… Rainfall sufficient
Jun 1.3" 8" 0" โœ… Rainfall sufficient
Jul 1.3" 8.3" 0" โœ… Rainfall sufficient
Aug 1.3" 7.7" 0" โœ… Rainfall sufficient
Sep 1.3" 7.2" 0" โœ… Rainfall sufficient
Oct 1.3" 4.2" 0" โœ… Rainfall sufficient
Nov 1.3" 2.3" 0" โœ… Rainfall sufficient
Dec 1.3" 2.3" 0" โœ… Rainfall sufficient

Water needs are for active growing months only (Febโ€“Dec in Glades County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 ~3,734 GDD — county provides 8,291 GDD Excellent fit

Lavender Planting Timeline โ€” Glades County, FL

Lavender Planting Calendar

Activity When Date Range
Transplant Outdoors February 8 Feb 8 โ€“ Feb 22
Harvest May 10 May 10 โ€“ Oct 11

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.3"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

90โ€“200 days

๐Ÿงช Soil pH

Needs 6.5โ€“8 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 9b

๐Ÿ“† Growing Season

321 days in Glades County

Growing Tips for Lavender in Glades County

Direct sow Lavender outdoors after February 01 in Glades County when soil has warmed and frost danger has passed.

Sandy soil in Glades County dries quickly โ€” mulch Lavender with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 101ยฐF in Glades County, provide afternoon shade for Lavender and water deeply in the morning.

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 Glades County, FL?

Glades County is in Zone 9b with an average last frost of February 1. Plan your Lavender planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Glades County, FL?

Glades County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is February 1 and first fall frost is December 19.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Glades County gardeners in Zone 9b 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 Glades County, FL. Local conditions may vary. Last updated: April 2026.