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When to Plant Haskaps in Springfield, VA

Fairfax County, Virginia Zone 7b June

Your June gardening checklist

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

Avg. last frost April 6
Avg. first frost November 3
Soil temp (4") 79°F
Watering Low
Pest pressure High
Daylight 14.7 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.

Springfield, Virginia is in USDA Zone 7b. The average last spring frost is April 6 and the first fall frost is November 3, giving you a growing season of approximately 211 days.

At an elevation of 548 feet, Fairfax County receives approximately 53 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Haskaps during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Haskaps root diseases.

Springfield, VA (Zone 7b) Long season
211 days
Last Spring Frost April 6
211 growing days
First Fall Frost November 3

Springfield Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-6.5

Drainage

Well Drained

Haskaps Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 17
Recommended (50%) ✓ Fits season
Transplant: Apr 27
Safe Start (90%) ✓ Fits season
Transplant: May 16

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 Springfield

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

Soil pH

Your soil pH (5.4–6.5) overlaps with Haskaps's range (5.5–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.8%). 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
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 4.1" 0" ❄️ Dormant
Feb 4.6" 0" ❄️ Dormant
Mar 5.5" 0" ❄️ Dormant
Apr 4.3" 4.1" 0.2" 💧 Light watering
May 4.3" 3.8" 0.5" 💧 Light watering
Jun 4.3" 5" 0" ✅ Rainfall sufficient
Jul 4.3" 5.9" 0" ✅ Rainfall sufficient
Aug 4.3" 4.1" 0.2" 💧 Light watering
Sep 4.3" 3.8" 0.5" 💧 Light watering
Oct 4.3" 3.3" 1" 💧 Light watering
Nov 4.3" 4.4" 0" ✅ Rainfall sufficient
Dec 4.4" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Fairfax 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 ~18,022 GDD — county provides 4,167 GDD May not mature

Haskaps Planting Timeline — Springfield, VA

Haskaps Planting Calendar

Activity When Date Range
Transplant Outdoors April 27 Apr 27 – May 11

· 48" apart · Rows 72" apart

Month-by-Month Timeline

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

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: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

211 days in Fairfax County

Growing Tips for Haskaps in Springfield

Direct sow Haskaps outdoors after April 06 in Fairfax County when soil has warmed and frost danger has passed.

Your 211.0-day growing season in Fairfax 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 →

🌱

Your Fairfax County Garden Planner — Free

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