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When to Plant Alpine Strawberries in Toole County, MT

Toole County, Montana Zone 4a May

Top priorities for Toole County, Montana gardeners in May

Your Toole County, Montana garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost May 24
Avg. first frost September 17
Soil temp (4") 30°F
Watering High
Pest pressure Low
Daylight 15 hrs
June prep starts now
  • Transplants going out: alpine strawberries

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Alpine strawberries are small, intensely flavored wild-type strawberries that fruit continuously from spring to frost. They do not produce runners and make excellent edging plants.

Toole County, Montana is in USDA Zone 4a. The average last spring frost is May 24 and the first fall frost is September 17, giving you a growing season of approximately 116 days.

At an elevation of 7,194 feet, Toole County receives approximately 23.3 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Alpine Strawberries to ensure they mature before fall.

Toole County, MT (Zone 4a) Short season
116 days
Last Spring Frost May 24
116 growing days
First Fall Frost September 17

Toole County Soil Profile

Soil Type

Loam

Soil pH

6.8-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Jun 15 🍅 Harvest: Sep 14 – Nov 9
Recommended (50%) ✗ May not fit
Transplant: Jun 21 🍅 Harvest: Sep 20 – Nov 15
Safe Start (90%) ✗ May not fit
Transplant: Jul 12 🍅 Harvest: Oct 11 – Dec 6

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 Toole County

How your county's soil matches Alpine Strawberries's growing requirements.

Soil pH

Your soil pH (6.8–8.2) is more alkaline than Alpine Strawberries prefers (5.5–6.8). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Toole County is excellent for Alpine Strawberries — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Alpine Strawberries.

How to Plant Alpine Strawberries

12"
Between Plants
24"
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 194 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Alpine Strawberries

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

Month Alpine Strawberries Needs Rainfall You Supplement Action
Jan 1.9" 0" ❄️ Dormant
Feb 1.4" 0" ❄️ Dormant
Mar 1.9" 0" ❄️ Dormant
Apr 2.3" 0" ❄️ Dormant
May 4.3" 2.4" 1.9" 💧 Light watering
Jun 4.3" 1.5" 2.8" 🚿 Regular watering
Jul 4.3" 2.2" 2.1" 💧 Light watering
Aug 4.3" 2.3" 2" 💧 Light watering
Sep 4.3" 2.2" 2.1" 💧 Light watering
Oct 2" 0" ❄️ Dormant
Nov 1.8" 0" ❄️ Dormant
Dec 1.4" 0" ❄️ Dormant

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

Alpine Strawberries 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.

Alpine Strawberries needs ~1,654 GDD — county provides 1,421 GDD May not mature

Alpine Strawberries Planting Timeline — Toole County, MT

Alpine Strawberries Planting Calendar

Activity When Date Range
Transplant Outdoors June 21 Jun 21 – Jul 5
Harvest September 20 Sep 20 – Nov 15

· 12" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

90–180 days

🧪 Soil pH

Needs 5.5–6.8 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 4a

📆 Growing Season

116 days in Toole County

Growing Tips for Alpine Strawberries in Toole County

Direct sow Alpine Strawberries outdoors after May 24 in Toole County when soil has warmed and frost danger has passed.

Your 116.0-day growing season in Toole County is tight for Alpine Strawberries (90.0-180.0 days to maturity). Start indoors and choose early-maturing varieties.

Toole County receives only 23" of rain annually. Alpine Strawberries needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors 8-10 weeks before transplanting. Unlike regular strawberries, alpines do not spread by runners. Harvest tiny, intensely aromatic berries frequently. Grow well in partial shade.

Companion Planting

Good Companions

Avoid Planting Near

  • Cabbage

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Alpine Strawberries in Toole County, MT?

Toole County is in Zone 4a with an average last frost of May 24. Plan your Alpine Strawberries planting based on this frost date — see the calendar above for exact timing.

What planting zone is Toole County, MT?

Toole County, Montana is in USDA Hardiness Zone 4a. The average last spring frost is May 24 and first fall frost is September 17.

🌱

Your Toole County Garden Planner — Free

A 24-page printable planner built for Toole County (Zone 4a). 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 Toole County, MT. Local conditions may vary. Last updated: May 2026.

Sources & credits

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