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When to Plant Bee Balm in Guernsey County, OH

Guernsey County, Ohio Zone 6b May

Top priorities for Guernsey County, Ohio gardeners in May

Your garden in Guernsey County, Ohio is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost April 30
Avg. first frost October 16
Soil temp (4") 63°F
Watering Moderate
Pest pressure Low
Daylight 14.2 hrs
  1. Transplant bee balm outside

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

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Bee balm is a native perennial herb with shaggy, scarlet flower heads that attract hummingbirds, bees, and butterflies. Its leaves make an aromatic tea reminiscent of Earl Grey.

Guernsey County, Ohio is in USDA Zone 6b. The average last spring frost is April 30 and the first fall frost is October 16, giving you a growing season of approximately 169 days.

At an elevation of 790 feet, Guernsey County receives approximately 30.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91°F, providing good warmth for Bee Balm during the growing season.

Guernsey County, OH (Zone 6b) Moderate season
169 days
Last Spring Frost April 30
169 growing days
First Fall Frost October 16
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Guernsey County Soil Profile

Soil Type

Silt Loam

Soil pH

6-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 4 🍅 Harvest: Aug 3 – Oct 19
Recommended (50%) ✗ May not fit
Transplant: May 7 🍅 Harvest: Aug 6 – Oct 22
Safe Start (90%) ✗ May not fit
Transplant: May 24 🍅 Harvest: Aug 23 – 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 Guernsey County

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

Soil pH

Your soil pH (6.0–7.0) is within Bee Balm's preferred range (6.0–7.0).

Soil Texture

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

Organic Matter

Organic matter is excellent (5.0%) — Bee Balm will thrive.

How to Plant Bee Balm

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 375 gal / 100 sq ft

Monthly Watering Guide for Bee Balm

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

Month Bee Balm Needs Rainfall You Supplement Action
Jan 1.2" 0" ❄️ Dormant
Feb 1.3" 0" ❄️ Dormant
Mar 2.2" 0" ❄️ Dormant
Apr 4.3" 2.8" 1.5" 💧 Light watering
May 4.3" 3.4" 0.9" 💧 Light watering
Jun 4.3" 4.1" 0.2" 💧 Light watering
Jul 4.3" 3.6" 0.7" 💧 Light watering
Aug 4.3" 3.1" 1.2" 💧 Light watering
Sep 4.3" 2.5" 1.8" 💧 Light watering
Oct 4.3" 2.4" 1.9" 💧 Light watering
Nov 2.2" 0" ❄️ Dormant
Dec 1.5" 0" ❄️ Dormant

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

Bee 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.

Bee Balm needs ~1,916 GDD — county provides 3,084 GDD Excellent fit

Bee Balm Planting Timeline — Guernsey County, OH

Bee Balm Planting Calendar

Activity When Date Range
Transplant Outdoors May 7 May 7 – May 21
Harvest August 6 Aug 6 – Oct 22

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7 · Your soil: ideal

🗺️ USDA Zone

Zone 6b

📆 Growing Season

169 days in Guernsey County

Growing Tips for Bee Balm in Guernsey County

Direct sow Bee Balm outdoors after April 30 in Guernsey County when soil has warmed and frost danger has passed.

General growing tips

Start from seed, divisions, or transplants. Provide good air circulation to prevent powdery mildew. Deadhead spent flowers for reblooming. Divide clumps every 3 years.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Bee Balm in Guernsey County, OH?

Guernsey County is in Zone 6b with an average last frost of April 30. Plan your Bee Balm planting based on this frost date — see the calendar above for exact timing.

What planting zone is Guernsey County, OH?

Guernsey County, Ohio is in USDA Hardiness Zone 6b. The average last spring frost is April 30 and first fall frost is October 16.

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Your Guernsey County Garden Planner — Free

A 24-page printable planner built for Guernsey 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 Guernsey County, OH. Local conditions may vary. Last updated: May 2026.

Sources & credits

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