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When to plant Haskaps in Plummer, ID

Plant Haskaps in Plummer during the brief May 29–June 12 window. With 146 frost-free days, fall plantings can't mature before October 1.

When to Plant Haskaps in Plummer, ID

Benewah County, Idaho Zone 6b June

Your June game plan for Benewah County, Idaho

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

Avg. last frost May 8
Avg. first frost October 1
Soil temp (4") 55°F
Watering High
Pest pressure High
Daylight 15.7 hrs

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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.

Plummer, Idaho is in USDA Zone 6b. The average last spring frost is May 8 and the first fall frost is October 1, giving you a growing season of approximately 146 days.

At an elevation of 6,081 feet, Benewah County receives approximately 20.8 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Haskaps during the growing season.

Plummer, ID (Zone 6b) Short season
146 days
Last Spring Frost May 8
146 growing days
First Fall Frost October 1

Plummer Soil Profile

Soil Type

Loam

Soil pH

6.3-7.8

Drainage

Well Drained

Haskaps Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 20
Recommended (50%) ✓ Fits season
Transplant: May 29
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 Plummer

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

Soil pH

Your soil pH (6.3–7.8) overlaps with Haskaps's range (5.5–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Haskaps.

How to Plant Haskaps

48"
Between Plants
72"
Between Rows

Haskaps Water Budget

Plant needs
1.0″/week
Rainfall provides
0.6″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 626 gal / 100 sq ft
Drought risk

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

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 1.4" 0" ❄️ Dormant
Feb 1.3" 0" ❄️ Dormant
Mar 2" 0" ❄️ Dormant
Apr 2.1" 0" ❄️ Dormant
May 4.3" 2.5" 1.8" 💧 Light watering
Jun 4.3" 1.5" 2.8" 🚿 Regular watering
Jul 4.3" 1.7" 2.6" 🚿 Regular watering
Aug 4.3" 2.2" 2.1" 💧 Light watering
Sep 4.3" 1.6" 2.7" 🚿 Regular watering
Oct 4.3" 1.8" 2.5" 🚿 Regular watering
Nov 1.6" 0" ❄️ Dormant
Dec 1.3" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Benewah 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 ~15,969 GDD — county provides 2,555 GDD May not mature

Haskaps Planting Timeline — Plummer, ID

Haskaps Planting Calendar

Activity When Date Range
Transplant Outdoors May 29 May 29 – Jun 12

· 48" apart · Rows 72" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

730–1095 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

146 days in Benewah County

Growing Tips for Haskaps in Plummer

Direct sow Haskaps outdoors after May 08 in Benewah County when soil has warmed and frost danger has passed.

Your 146.0-day growing season in Benewah County is tight for Haskaps (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

Benewah County receives only 21" of rain annually. Haskaps needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

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 →

When should I plant Haskaps in Plummer, ID?

In Plummer, ID, plant Haskaps after the last frost (around May 8) and before the first frost (around October 1). Best results when soil holds above 50°F.

What growing zone is Plummer, ID for Haskaps?

Plummer sits in USDA Zone 6b. Haskaps grows reliably in zones 2a through 7b, so it's a good fit here.

Can Haskaps grow in Plummer's climate?

Yes — Haskaps grows well in Plummer's temperate climate. Plummer averages a 146-day frost-free season, with last frost around May 8 and first frost around October 1.

🌱

Your Benewah County Garden Planner — Free

A 22-page printable planner built for Benewah County (Zone 6b). 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 Benewah County, ID. Local conditions may vary. Last updated: June 2026.