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When to Plant Lemon Balm in Floyd County, KY

Floyd County, Kentucky Zone 6b April

What to do in April

April is a pivotal month for Floyd County, Kentucky gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 21
Avg. first frost October 21
Soil temp (4") 46°F
Watering Low
Pest pressure Low
Daylight 13 hrs
  1. Move lemon balm from tray to bed

    Frost risk is low now in Floyd County, Kentucky. If you've been covering beds overnight, you can stop.

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Lemon balm is a vigorous perennial herb with bright green, lemon-scented leaves. It makes a refreshing tea and is easy to grow but can spread aggressively.

Floyd County, Kentucky is in USDA Zone 6b. The average last spring frost is April 21 and the first fall frost is October 21, giving you a growing season of approximately 183 days.

At an elevation of 2,218 feet, Floyd County receives approximately 52 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Lemon Balm during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Lemon Balm root diseases.

Floyd County, KY (Zone 6b) Moderate season
183 days
Last Spring Frost April 21
183 growing days
First Fall Frost October 21
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Floyd County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (67 days to spare)
Transplant: Apr 21 🍅 Harvest: Jun 23 – Aug 11
Recommended (50%) ✓ Fits season (64 days to spare)
Transplant: Apr 28 🍅 Harvest: Jun 30 – Aug 18
Safe Start (90%) ✓ Fits season (56 days to spare)
Transplant: May 18 🍅 Harvest: Jul 20 – Sep 7

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 Floyd County

How your county's soil matches Lemon Balm's growing requirements.

Soil pH

Your soil pH (5.3–7.1) overlaps with Lemon Balm's range (5.5–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Floyd County is excellent for Lemon Balm — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

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

How to Plant Lemon Balm

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Lemon Balm

3
successive plantings in your 183-day season

Sow every 6.9 weeks. Last sowing by Aug 12 to harvest before frost.

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

Monthly Watering Guide for Lemon Balm

Lemon Balm needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Lemon Balm Needs Rainfall You Supplement Action
Jan 4.2" 0" ❄️ Dormant
Feb 4.7" 0" ❄️ Dormant
Mar 4.7" 0" ❄️ Dormant
Apr 2.2" 3.8" 0" ✅ Rainfall sufficient
May 2.2" 3.7" 0" ✅ Rainfall sufficient
Jun 2.2" 5.1" 0" ✅ Rainfall sufficient
Jul 2.2" 5" 0" ✅ Rainfall sufficient
Aug 2.2" 5" 0" ✅ Rainfall sufficient
Sep 2.2" 3.9" 0" ✅ Rainfall sufficient
Oct 2.2" 3.1" 0" ✅ Rainfall sufficient
Nov 3.9" 0" ❄️ Dormant
Dec 4.9" 0" ❄️ Dormant

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

Lemon Balm 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.

Lemon Balm needs ~1,089 GDD — county provides 3,065 GDD Excellent fit

Lemon Balm Planting Timeline — Floyd County, KY

Lemon Balm Planting Calendar

Activity When Date Range
Transplant Outdoors April 28 Apr 28 – May 12
Harvest June 30 Jun 30 – Aug 18

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

Month-by-Month Timeline

MonthActivities
January
February
March
April Transplant Outdoors
May Transplant Outdoors
June Harvest
July Harvest
August Harvest
September
October
November
December
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Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–70 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

183 days in Floyd County

Growing Tips for Lemon Balm in Floyd County

Direct sow Lemon Balm outdoors after April 21 in Floyd County when soil has warmed and frost danger has passed.

General growing tips

Start from seed, cuttings, or divisions. Contain in pots or use barriers to prevent spreading. Harvest frequently to keep plants bushy and prevent flowering.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Lemon Balm in Floyd County, KY?

Floyd County is in Zone 6b with an average last frost of April 21. Plan your Lemon Balm planting based on this frost date — see the calendar above for exact timing.

What planting zone is Floyd County, KY?

Floyd County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 21 and first fall frost is October 21.

🌱

Your Floyd County Garden Planner — Free

A 24-page printable planner built for Floyd County (Zone 6b). 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 Floyd County, KY. Local conditions may vary. Last updated: April 2026.

Sources & credits

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