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When to plant Phlox in Lee County County,

Lee County County's spring Phlox window runs March 7 through March 28. most warm-season crops establish quickly once soil holds above 60°F.

When to Plant Phlox in Lee County, GA

Lee County, Georgia Zone 8b June

This month in Lee County, Georgia

A quick June briefing for Lee County, Georgia gardeners — what's urgent, what's next, and what can wait.

Avg. last frost March 7
Avg. first frost November 18
Soil temp (4") 82°F
Watering Low
Pest pressure High
Daylight 14.1 hrs
  1. Collect phlox at their peak

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Coming up in July — start thinking about
  • First harvests: phlox

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Garden Phlox (Phlox paniculata) is a beloved native perennial of eastern North America, producing large, domed clusters of fragrant flowers atop upright stems from mid-summer into fall. Its sweet honey-like fragrance carries on summer evenings and draws hummingbirds, butterflies, and sphinx moths. Modern cultivars offer colors spanning white, pink, salmon, red, purple, and bicolors. A classic cottage garden stalwart, phlox combines well with black-eyed Susans, echinacea, and ornamental grasses in naturalistic plantings. Select mildew-resistant cultivars for best long-term performance.

Lee County, Georgia is in USDA Zone 8b. The average last spring frost is March 7 and the first fall frost is November 18, giving you a growing season of approximately 256 days.

At an elevation of 432 feet, Lee County receives approximately 50.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 96°F, so Phlox may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Phlox, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Phlox root diseases.

Perennial Blooms in Summer Pollinator-friendly Good for cutting Fragrant
Lee County, GA (Zone 8b) Long season
256 days
Last Spring Frost March 7
256 growing days
First Fall Frost November 18
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Lee County Soil Profile

Soil Type

Clay Loam

Soil pH

5.4-6.8

Drainage

Well Drained

Phlox Planting Risk Windows

Early Start (70% safe) ✓ Fits season (116 days to spare)
Start indoors: Jan 3 Transplant: Feb 28 🌸 Bloom: May 9 – Jul 18
Recommended (50%) ✓ Fits season (116 days to spare)
Start indoors: Jan 10 Transplant: Mar 7 🌸 Bloom: May 16 – Jul 25
Safe Start (90%) ✓ Fits season (112 days to spare)
Start indoors: Jan 29 Transplant: Mar 26 🌸 Bloom: Jun 4 – Aug 13

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 Lee County

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

Soil pH

Your soil pH (5.4–6.8) overlaps with Phlox's range (6.0–7.0), though not a perfect match.

Soil Texture

The clay loam soil in Lee County is excellent for Phlox — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Phlox.

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Phlox.

How to Plant Phlox

0.3"
Planting Depth
18"
Between Plants
24"
Between Rows

Succession Planting Phlox

3
successive plantings in your 256-day season

Sow every 9.1 weeks. Last sowing by Jul 31 to harvest before frost.

Phlox Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Phlox

Phlox needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Phlox Needs Rainfall You Supplement Action
Jan 4" 0" ❄️ Dormant
Feb 4.5" 0" ❄️ Dormant
Mar 4.3" 4.2" 0.1" 💧 Light watering
Apr 4.3" 4.3" 0" ✅ Rainfall sufficient
May 4.3" 4.2" 0.1" 💧 Light watering
Jun 4.3" 4.2" 0.1" 💧 Light watering
Jul 4.3" 5.7" 0" ✅ Rainfall sufficient
Aug 4.3" 5.1" 0" ✅ Rainfall sufficient
Sep 4.3" 4" 0.3" 💧 Light watering
Oct 4.3" 3" 1.3" 💧 Light watering
Nov 4.3" 3.5" 0.8" 💧 Light watering
Dec 4.1" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Lee County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Phlox 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.

Phlox needs ~2,090 GDD — county provides 5,632 GDD Excellent fit

Phlox Planting Timeline — Lee County, GA

Phlox Planting Calendar

Activity When Date Range
Start Indoors January 10 Jan 10 – Jan 24
Transplant Outdoors March 7 Mar 7 – Mar 21
Direct Sow March 7 Mar 7 – Mar 28
Bloom May 16 May 16 – Jul 25

Plant 0.3" deep · 18" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors
February
March Transplant Outdoors Direct Sow
April
May Bloom
June Bloom
July Bloom
August
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

80–110 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

256 days in Lee County

Growing Tips for Phlox in Lee County

Direct sow Phlox outdoors after March 07 in Lee County when soil has warmed and frost danger has passed.

With Lee County's clay soil (34% clay), work in 3-4 inches of compost before planting Phlox. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 96°F in Lee County, provide afternoon shade for Phlox and water deeply in the morning.

General growing tips

Start seeds indoors 8–10 weeks before last frost, or transplant container divisions in spring. Named cultivar seeds may not come true; divisions from named plants are the preferred propagation method. Space generously (18–24 inches) and avoid overhead watering to reduce powdery mildew risk. Good air circulation is critical — thin clumps to the strongest 5–7 stems per plant in spring. Deadhead after the primary bloom flush to encourage secondary flowering. Division every 2–3 years in spring keeps plants vigorous. Fall planting of divisions (Zones 5+) is equally effective. Year 2+ plants develop into full clumps with the most prolific bloom.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Phlox in Lee County, GA?

Lee County is in Zone 8b with an average last frost of March 7. Plan your Phlox planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lee County, GA?

Lee County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 7 and first fall frost is November 18.

When should I plant Phlox in Lee County County, ?

In Lee County County, , plant Phlox after the last frost (around March 7) and before the first frost (around November 18). Best results when soil holds above 50°F.

What growing zone is Lee County County, for Phlox?

Lee County County sits in USDA Zone 8b. Phlox grows reliably in zones 3a through 9a, so it's a good fit here.

Can Phlox grow in Lee County County's climate?

Yes — Phlox grows well in Lee County County's temperate climate. Lee County County averages a 256-day frost-free season, with last frost around March 7 and first frost around November 18.

🌱

Your Lee County Garden Planner — Free

A 22-page printable planner built for Lee County (Zone 8b). 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 Lee County, GA. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.