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When to Plant Cranberries in Musselshell County, MT

Musselshell County, Montana Zone 4b April

Your April game plan for Musselshell County, Montana

April rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Musselshell County, Montana.

Avg. last frost May 14
Avg. first frost September 23
Soil temp (4") 22°F
Watering High
Pest pressure Low
Daylight 13.3 hrs

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Cranberries are low-growing, vine-like shrubs that produce tart red berries in fall. They grow in acidic, boggy conditions and are surprisingly easy to cultivate.

Musselshell County, Montana is in USDA Zone 4a. The average last spring frost is May 14 and the first fall frost is September 23, giving you a growing season of approximately 132 days.

At an elevation of 6,528 feet, Musselshell County receives approximately 15.4 inches of rainfall annually with predominantly loam soil. Summer highs average 82°F, so choose short-season varieties of Cranberries to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Cranberries successfully. Mulch heavily to conserve soil moisture.

Musselshell County, MT (Zone 4a) Short season
132 days
Last Spring Frost May 14
132 growing days
First Fall Frost September 23
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Musselshell County Soil Profile

Soil Type

Loam

Soil pH

6.5-8.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Jun 6
Recommended (50%) ✓ Fits season
Transplant: Jun 11
Safe Start (90%) ✓ Fits season
Transplant: Jun 22

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 Musselshell County

How your county's soil matches Cranberries's growing requirements.

Soil pH

Your soil pH (6.5–8.4) is more alkaline than Cranberries prefers (4.0–5.5). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Musselshell County is excellent for Cranberries — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

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

How to Plant Cranberries

36"
Between Plants
48"
Between Rows

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.5″/week
You supply
1.2″/week
Watering frequency 2-3 times/week
Season total 1,424 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Cranberries

Cranberries needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Cranberries Needs Rainfall You Supplement Action
Jan 1.1" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.2" 0" ❄️ Dormant
Apr 1.7" 0" ❄️ Dormant
May 6.5" 2" 4.5" 🚿 Regular watering
Jun 6.5" 1.1" 5.4" 🚿 Regular watering
Jul 6.5" 1.3" 5.2" 🚿 Regular watering
Aug 6.5" 1.6" 4.9" 🚿 Regular watering
Sep 6.5" 1.1" 5.4" 🚿 Regular watering
Oct 1.4" 0" ❄️ Dormant
Nov 1.1" 0" ❄️ Dormant
Dec 1" 0" ❄️ Dormant

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

Cranberries 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.

Cranberries needs ~10,494 GDD — county provides 1,518 GDD May not mature

Cranberries Planting Timeline — Musselshell County, MT

Cranberries Planting Calendar

Activity When Date Range
Transplant Outdoors June 11 Jun 11 – Jun 25

· 36" apart · Rows 48" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 2-3 times/week

📅 Days to Maturity

730–1095 days

🧪 Soil pH

Needs 4–5.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 4a

📆 Growing Season

132 days in Musselshell County

Growing Tips for Cranberries in Musselshell County

Direct sow Cranberries outdoors after May 14 in Musselshell County when soil has warmed and frost danger has passed.

Your 132.0-day growing season in Musselshell County is tight for Cranberries (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

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

General growing tips

Create an acidic, consistently moist bed with peat moss. Cranberries do not need to be flooded to grow; flooding is only used for commercial harvesting. Mulch with sand in early spring.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cranberries in Musselshell County, MT?

Musselshell County is in Zone 4a with an average last frost of May 14. Plan your Cranberries planting based on this frost date — see the calendar above for exact timing.

What planting zone is Musselshell County, MT?

Musselshell County, Montana is in USDA Hardiness Zone 4a. The average last spring frost is May 14 and first fall frost is September 23.

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Your Musselshell County Garden Planner — Free

A 24-page printable planner built for Musselshell 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 Musselshell County, MT. 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.