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When to Plant Bee Balm in Simpson County, MS

Simpson County, Mississippi Zone 8b May

Simpson County, Mississippi gardeners: here's your May plan

We've pulled the most time-sensitive tasks for Simpson County, Mississippi this May and put them front and centre. Tackle them in order.

Avg. last frost March 10
Avg. first frost November 15
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
June prep starts now
  • First harvests: bee balm

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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.

Simpson County, Mississippi is in USDA Zone 8b. The average last spring frost is March 10 and the first fall frost is November 15, giving you a growing season of approximately 250 days.

At an elevation of 90 feet, Simpson County receives approximately 48.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 97°F, so Bee Balm may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Bee Balm, but amend with compost to improve drainage and prevent root rot.

Simpson County, MS (Zone 8b) Long season
250 days
Last Spring Frost March 10
250 growing days
First Fall Frost November 15
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Simpson County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (76 days to spare)
Transplant: Mar 10 🍅 Harvest: Jun 9 – Aug 25
Recommended (50%) ✓ Fits season (75 days to spare)
Transplant: Mar 17 🍅 Harvest: Jun 16 – Sep 1
Safe Start (90%) ✓ Fits season (70 days to spare)
Transplant: Apr 6 🍅 Harvest: Jul 6 – Sep 21

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 Simpson County

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

Soil pH

Your soil pH (5.6–6.8) overlaps with Bee Balm's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Bee Balm.

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
0.2″/week
Watering frequency Only during dry spells
Season total 499 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 4.3" 0" ❄️ Dormant
Feb 4" 0" ❄️ Dormant
Mar 4.3" 4.3" 0" ✅ Rainfall sufficient
Apr 4.3" 3.9" 0.4" 💧 Light watering
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 4.9" 0" ✅ Rainfall sufficient
Jul 4.3" 4.8" 0" ✅ Rainfall sufficient
Aug 4.3" 4.1" 0.2" 💧 Light watering
Sep 4.3" 3.9" 0.4" 💧 Light watering
Oct 4.3" 2.9" 1.4" 💧 Light watering
Nov 4.3" 3.4" 0.9" 💧 Light watering
Dec 3.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Simpson 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 ~2,389 GDD — county provides 5,687 GDD Excellent fit

Bee Balm Planting Timeline — Simpson County, MS

Bee Balm Planting Calendar

Activity When Date Range
Transplant Outdoors March 17 Mar 17 – Mar 31
Harvest June 16 Jun 16 – Sep 1

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

Month-by-Month Timeline

MonthActivities
January
February
March Transplant Outdoors
April
May
June Harvest
July Harvest
August Harvest
September Harvest
October
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: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

250 days in Simpson County

Growing Tips for Bee Balm in Simpson County

Direct sow Bee Balm outdoors after March 10 in Simpson County when soil has warmed and frost danger has passed.

With Simpson County's clay soil (32% clay), work in 3-4 inches of compost before planting Bee Balm. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 97°F in Simpson County, provide afternoon shade for Bee Balm and water deeply in the morning.

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 Simpson County, MS?

Simpson County is in Zone 8b with an average last frost of March 10. Plan your Bee Balm planting based on this frost date — see the calendar above for exact timing.

What planting zone is Simpson County, MS?

Simpson County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 10 and first fall frost is November 15.

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Your Simpson County Garden Planner — Free

A 24-page printable planner built for Simpson 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 Simpson County, MS. 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.