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When to Plant Haskaps in Fossil, OR

Fossil, OR Zone 7a June

What to do in June

Your Fossil, OR garden is entering a new phase. Here's what's on the schedule for June and why each task matters now.

Avg. last frost May 23
Avg. first frost September 23
Soil temp (4") 65°F
Watering Critical
Pest pressure High
Daylight 15.4 hrs
  1. Plant out haskaps

    Water the tray well an hour before you transplant. Roots slide out cleanly and settle in faster.

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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.

Fossil, Oregon is in USDA Zone 7a. The average last spring frost is May 23 and the first fall frost is September 23, giving you a growing season of approximately 123 days.

At an elevation of 2,175 feet, Wheeler County receives approximately 22.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Haskaps to ensure they mature before fall.

Fossil, OR (Zone 7a) Short season
123 days
Last Spring Frost May 23
123 growing days
First Fall Frost September 23
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Fossil Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.3

Drainage

Well Drained

Haskaps Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Jun 6
Recommended (50%) ✓ Fits season
Transplant: Jun 13
Safe Start (90%) ✓ Fits season
Transplant: Jul 10

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 Fossil

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

Soil pH

Your soil pH (5.2–6.3) overlaps with Haskaps's range (5.5–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is excellent (5.7%) — Haskaps will thrive.

How to Plant Haskaps

48"
Between Plants
72"
Between Rows

Haskaps 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 242 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 3" 0" ❄️ Dormant
Feb 2.3" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 1.6" 0" ❄️ Dormant
May 4.3" 1.5" 2.8" 🚿 Regular watering
Jun 4.3" 1" 3.3" 🚿 Regular watering
Jul 4.3" 0.4" 3.9" 🚿 Regular watering
Aug 4.3" 0.4" 3.9" 🚿 Regular watering
Sep 4.3" 0.8" 3.5" 🚿 Regular watering
Oct 2.1" 0" ❄️ Dormant
Nov 3.3" 0" ❄️ Dormant
Dec 3.8" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Wheeler 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 ~11,178 GDD — county provides 1,506 GDD May not mature

Haskaps Planting Timeline — Fossil, OR

Haskaps Planting Calendar

Activity When Date Range
Transplant Outdoors June 13 Jun 13 – Jun 27

· 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 · Only during dry spells

📅 Days to Maturity

730–1095 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

123 days in Wheeler County

Growing Tips for Haskaps in Fossil

Direct sow Haskaps outdoors after May 23 in Wheeler County when soil has warmed and frost danger has passed.

Your 123.0-day growing season in Wheeler County is tight for Haskaps (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

Wheeler County receives only 23" 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 →

🌱

Your Wheeler County Garden Planner — Free

A 22-page printable planner built for Wheeler County (Zone 7a). 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 Wheeler County, OR. Local conditions may vary. Last updated: June 2026.