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When to Plant Bee Balm in Teton County, MT

Teton County, Montana Zone 4b May

This month in Teton County, Montana

Here's what deserves your attention in Teton County, Montana this month. Everything below is tailored to Zone 4b and timed around your local frost dates.

Avg. last frost May 25
Avg. first frost September 16
Soil temp (4") 28°F
Watering High
Pest pressure Low
Daylight 14.9 hrs
To set up a strong June, finish these tasks
  • Transplants going out: 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.

Teton County, Montana is in USDA Zone 4b. The average last spring frost is May 25 and the first fall frost is September 16, giving you a growing season of approximately 114 days.

At an elevation of 8,276 feet, Teton County receives approximately 15.1 inches of rainfall annually with predominantly loam soil. Summer highs average 84°F, so choose short-season varieties of Bee Balm to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Bee Balm successfully. Mulch heavily to conserve soil moisture.

Teton County, MT (Zone 4b) Short season
114 days
Last Spring Frost May 25
114 growing days
First Fall Frost September 16
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Teton County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 27 🍅 Harvest: Aug 26 – Oct 21
Recommended (50%) ✗ May not fit
Transplant: Jun 1 🍅 Harvest: Aug 31 – Oct 26
Safe Start (90%) ✗ May not fit
Transplant: Jun 18 🍅 Harvest: Sep 17 – Nov 12

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 Teton County

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

Soil pH

Your soil pH (6.6–7.6) is more alkaline than Bee Balm prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Bee Balm.

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
0.6″/week
You supply
0.9″/week
Watering frequency 2-3 times/week
Season total 905 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 1.1" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.2" 0" ❄️ Dormant
Apr 1.5" 0" ❄️ Dormant
May 4.3" 1.7" 2.6" 🚿 Regular watering
Jun 4.3" 1.2" 3.1" 🚿 Regular watering
Jul 4.3" 1.4" 2.9" 🚿 Regular watering
Aug 4.3" 1.7" 2.6" 🚿 Regular watering
Sep 4.3" 1.3" 3" 🚿 Regular watering
Oct 1.3" 0" ❄️ Dormant
Nov 0.9" 0" ❄️ Dormant
Dec 0.9" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Teton 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 ~1,365 GDD — county provides 1,482 GDD Good fit

Bee Balm Planting Timeline — Teton County, MT

Bee Balm Planting Calendar

Activity When Date Range
Transplant Outdoors June 1 Jun 1 – Jun 15
Harvest August 31 Aug 31 – Oct 26

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 2-3 times/week

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 4b

📆 Growing Season

114 days in Teton County

Growing Tips for Bee Balm in Teton County

Direct sow Bee Balm outdoors after May 25 in Teton County when soil has warmed and frost danger has passed.

Your 114.0-day growing season in Teton County is tight for Bee Balm (90.0-120.0 days to maturity). Start indoors and choose early-maturing varieties.

Teton County receives only 15" of rain annually. Bee Balm needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

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 Teton County, MT?

Teton County is in Zone 4b with an average last frost of May 25. Plan your Bee Balm planting based on this frost date — see the calendar above for exact timing.

What planting zone is Teton County, MT?

Teton County, Montana is in USDA Hardiness Zone 4b. The average last spring frost is May 25 and first fall frost is September 16.

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Your Teton County Garden Planner — Free

A 24-page printable planner built for Teton County (Zone 4b). 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 Teton County, MT. 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.