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When to Plant Haskaps in Red Lake County, MN

Red Lake County, Minnesota Zone 3b May

Your May planting checklist for Red Lake County, Minnesota

Each item below is timed to Red Lake County, Minnesota's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost May 11
Avg. first frost October 1
Soil temp (4") 48°F
Watering Moderate
Pest pressure Low
Daylight 14.9 hrs
Looking ahead to June
  • Transplants going out: haskaps

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Haskaps (honeyberries) are extremely cold-hardy shrubs producing elongated blue berries with a complex blueberry-raspberry flavor. They fruit very early in the season.

Red Lake County, Minnesota is in USDA Zone 3b. The average last spring frost is May 11 and the first fall frost is October 1, giving you a growing season of approximately 143 days.

At an elevation of 616 feet, Red Lake County receives approximately 36.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Haskaps to ensure they mature before fall.

Red Lake County, MN (Zone 3b) Short season
143 days
Last Spring Frost May 11
143 growing days
First Fall Frost October 1
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Red Lake County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 30
Recommended (50%) ✓ Fits season
Transplant: Jun 8
Safe Start (90%) ✓ Fits season
Transplant: Jun 19

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 Red Lake County

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

Soil pH

Your soil pH (6.1–6.8) is within Haskaps's preferred range (5.5–7.5).

Soil Texture

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

Organic Matter

Organic matter is moderate (4.0%). Annual compost additions will help Haskaps.

How to Plant Haskaps

48"
Between Plants
72"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Haskaps

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

Month Haskaps Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 2.8" 0" ❄️ Dormant
Apr 3.9" 0" ❄️ Dormant
May 4.3" 3.6" 0.7" 💧 Light watering
Jun 4.3" 4" 0.3" 💧 Light watering
Jul 4.3" 4.4" 0" ✅ Rainfall sufficient
Aug 4.3" 4.3" 0" ✅ Rainfall sufficient
Sep 4.3" 3" 1.3" 💧 Light watering
Oct 4.3" 2.8" 1.5" 💧 Light watering
Nov 2.8" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

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

Haskaps 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.

Haskaps needs ~9,125 GDD — county provides 1,430 GDD May not mature

Haskaps Planting Timeline — Red Lake County, MN

Haskaps Planting Calendar

Activity When Date Range
Transplant Outdoors June 8 Jun 8 – Jun 22

· 48" apart · Rows 72" 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"/week · Natural rainfall sufficient

📅 Days to Maturity

730–1095 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 3b

📆 Growing Season

143 days in Red Lake County

Growing Tips for Haskaps in Red Lake County

Direct sow Haskaps outdoors after May 11 in Red Lake County when soil has warmed and frost danger has passed.

Your 143.0-day growing season in Red Lake County is tight for Haskaps (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant at least two different varieties for cross-pollination. Fruits ripen 2-3 weeks before strawberries. Protect from birds. Very low maintenance once established. Tolerates extreme cold.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Haskaps in Red Lake County, MN?

Red Lake County is in Zone 3b with an average last frost of May 11. Plan your Haskaps planting based on this frost date — see the calendar above for exact timing.

What planting zone is Red Lake County, MN?

Red Lake County, Minnesota is in USDA Hardiness Zone 3b. The average last spring frost is May 11 and first fall frost is October 1.

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Your Red Lake County Garden Planner — Free

A 24-page printable planner built for Red Lake 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 Red Lake 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.