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When to Plant Haskaps in Lincoln County, ME

Lincoln County, Maine Zone 6a May

Your May planting checklist for Lincoln County, Maine

A quick May briefing for Lincoln County, Maine gardeners — what's urgent, what's next, and what can wait.

Avg. last frost May 3
Avg. first frost October 9
Soil temp (4") 58°F
Watering Low
Pest pressure Low
Daylight 14.6 hrs
  1. Set out haskaps seedlings

    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.

Lincoln County, Maine is in USDA Zone 6a. The average last spring frost is May 3 and the first fall frost is October 9, giving you a growing season of approximately 159 days.

At an elevation of 815 feet, Lincoln County receives approximately 50 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Haskaps during the growing season.

Lincoln County, ME (Zone 6a) Moderate season
159 days
Last Spring Frost May 3
159 growing days
First Fall Frost October 9
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Lincoln County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 20
Recommended (50%) ✓ Fits season
Transplant: May 24
Safe Start (90%) ✓ Fits season
Transplant: Jun 6

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 Lincoln County

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

Soil pH

Your soil pH (5.0–6.4) overlaps with Haskaps's range (5.5–7.5), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Haskaps.

Organic Matter

Organic matter is moderate (3.3%). 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
1.3″/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 3.6" 0" ❄️ Dormant
Feb 3.1" 0" ❄️ Dormant
Mar 4.6" 0" ❄️ Dormant
Apr 4.8" 0" ❄️ Dormant
May 4.3" 4.6" 0" ✅ Rainfall sufficient
Jun 4.3" 4.6" 0" ✅ Rainfall sufficient
Jul 4.3" 5.4" 0" ✅ Rainfall sufficient
Aug 4.3" 4.2" 0.1" 💧 Light watering
Sep 4.3" 4.1" 0.2" 💧 Light watering
Oct 4.3" 3.9" 0.4" 💧 Light watering
Nov 3.4" 0" ❄️ Dormant
Dec 3.8" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Lincoln 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 ~13,916 GDD — county provides 2,424 GDD May not mature

Haskaps Planting Timeline — Lincoln County, ME

Haskaps Planting Calendar

Activity When Date Range
Transplant Outdoors May 24 May 24 – Jun 7

· 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
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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: acceptable

🗺️ USDA Zone

Zone 6a

📆 Growing Season

159 days in Lincoln County

Growing Tips for Haskaps in Lincoln County

Direct sow Haskaps outdoors after May 03 in Lincoln County when soil has warmed and frost danger has passed.

Your 159.0-day growing season in Lincoln 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 Lincoln County, ME?

Lincoln County is in Zone 6a with an average last frost of May 3. Plan your Haskaps planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lincoln County, ME?

Lincoln County, Maine is in USDA Hardiness Zone 6a. The average last spring frost is May 3 and first fall frost is October 9.

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Your Lincoln County Garden Planner — Free

A 24-page printable planner built for Lincoln County (Zone 6a). 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 Lincoln County, ME. 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.