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When to Plant Lingonberries in Hunterdon County, NJ

Hunterdon County, New Jersey Zone 7a May

May in the garden — Hunterdon County, New Jersey

Here's what deserves your attention in Hunterdon County, New Jersey this month. Everything below is tailored to Zone 7a and timed around your local frost dates.

Avg. last frost April 12
Avg. first frost October 29
Soil temp (4") 62°F
Watering Moderate
Pest pressure Low
Daylight 14.3 hrs
  1. Move lingonberries into the garden

    Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.

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Lingonberries are low-growing evergreen shrubs producing small, tart red berries used in Scandinavian cuisine. They thrive in acidic soil and cold climates.

Hunterdon County, New Jersey is in USDA Zone 7a. The average last spring frost is April 12 and the first fall frost is October 29, giving you a growing season of approximately 200 days.

At an elevation of 534 feet, Hunterdon County receives approximately 46.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Lingonberries during the growing season.

Hunterdon County, NJ (Zone 7a) Long season
200 days
Last Spring Frost April 12
200 growing days
First Fall Frost October 29

Hunterdon County Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 26
Recommended (50%) ✓ Fits season
Transplant: May 3
Safe Start (90%) ✓ Fits season
Transplant: May 22

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 Hunterdon County

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

Soil pH

Your soil pH (5.2–6.3) is more alkaline than Lingonberries prefers (4.5–5.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.7%). Annual compost additions will help Lingonberries.

How to Plant Lingonberries

48"
Between Plants
72"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 31 gal / 100 sq ft

Monthly Watering Guide for Lingonberries

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

Month Lingonberries Needs Rainfall You Supplement Action
Jan 3.7" 0" ❄️ Dormant
Feb 2.7" 0" ❄️ Dormant
Mar 4.1" 0" ❄️ Dormant
Apr 4.3" 3.8" 0.5" 💧 Light watering
May 4.3" 3.7" 0.6" 💧 Light watering
Jun 4.3" 4.1" 0.2" 💧 Light watering
Jul 4.3" 5.1" 0" ✅ Rainfall sufficient
Aug 4.3" 4.1" 0.2" 💧 Light watering
Sep 4.3" 4.1" 0.2" 💧 Light watering
Oct 4.3" 4.1" 0.2" 💧 Light watering
Nov 3.7" 0" ❄️ Dormant
Dec 3.5" 0" ❄️ Dormant

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

Lingonberries 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.

Lingonberries needs ~15,969 GDD — county provides 3,500 GDD May not mature

Lingonberries Planting Timeline — Hunterdon County, NJ

Lingonberries Planting Calendar

Activity When Date Range
Transplant Outdoors May 3 May 3 – May 17

· 48" apart · Rows 72" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

730–1095 days

🧪 Soil pH

Needs 4.5–5.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7a

📆 Growing Season

200 days in Hunterdon County

Growing Tips for Lingonberries in Hunterdon County

Direct sow Lingonberries outdoors after April 12 in Hunterdon County when soil has warmed and frost danger has passed.

Your 200.0-day growing season in Hunterdon County is tight for Lingonberries (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Amend soil with peat and pine needle mulch for acidity. Plant 12 inches apart as a ground cover. Berries ripen in late summer. Requires minimal pruning.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Lingonberries in Hunterdon County, NJ?

Hunterdon County is in Zone 7a with an average last frost of April 12. Plan your Lingonberries planting based on this frost date — see the calendar above for exact timing.

What planting zone is Hunterdon County, NJ?

Hunterdon County, New Jersey is in USDA Hardiness Zone 7a. The average last spring frost is April 12 and first fall frost is October 29.

🌱

Your Hunterdon County Garden Planner — Free

A 24-page printable planner built for Hunterdon 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 Hunterdon County, NJ. 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.