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When to Plant Cranberries in Kittson County, MN

Kittson County, Minnesota Zone 3b May

Your May planting checklist for Kittson County, Minnesota

May is a pivotal month for Kittson County, Minnesota gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost May 14
Avg. first frost September 30
Soil temp (4") 50°F
Watering Low
Pest pressure Low
Daylight 15 hrs
June will be here before you know it — start on
  • Transplants going out: cranberries

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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.

Kittson County, Minnesota is in USDA Zone 3b. The average last spring frost is May 14 and the first fall frost is September 30, giving you a growing season of approximately 139 days.

At an elevation of 778 feet, Kittson County receives approximately 40.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Cranberries to ensure they mature before fall.

Kittson County, MN (Zone 3b) Short season
139 days
Last Spring Frost May 14
139 growing days
First Fall Frost September 30

Kittson County Soil Profile

Soil Type

Silt Loam

Soil pH

6.2-7.3

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 27

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 Kittson County

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

Soil pH

Your soil pH (6.2–7.3) is more alkaline than Cranberries prefers (4.0–5.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is excellent (4.8%) — Cranberries will thrive.

How to Plant Cranberries

36"
Between Plants
48"
Between Rows

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
1.2″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 353 gal / 100 sq ft

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 1.8" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 3.1" 0" ❄️ Dormant
Apr 3.6" 0" ❄️ Dormant
May 6.5" 4.5" 2" 💧 Light watering
Jun 6.5" 5.3" 1.2" 💧 Light watering
Jul 6.5" 4" 2.5" 💧 Light watering
Aug 6.5" 4.2" 2.3" 💧 Light watering
Sep 6.5" 3.3" 3.2" 💧 Light watering
Oct 3.4" 0" ❄️ Dormant
Nov 2.9" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Kittson 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 ~7,756 GDD — county provides 1,181 GDD May not mature

Cranberries Planting Timeline — Kittson County, MN

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · Only during dry spells

📅 Days to Maturity

730–1095 days

🧪 Soil pH

Needs 4–5.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 3b

📆 Growing Season

139 days in Kittson County

Growing Tips for Cranberries in Kittson County

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

Your 139.0-day growing season in Kittson County is tight for Cranberries (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

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 Kittson County, MN?

Kittson County is in Zone 3b 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 Kittson County, MN?

Kittson County, Minnesota is in USDA Hardiness Zone 3b. The average last spring frost is May 14 and first fall frost is September 30.

🌱

Your Kittson County Garden Planner — Free

A 24-page printable planner built for Kittson County (Zone 3b). 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 Kittson County, MN. 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.