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When to Plant Cranberries in Lunenburg County, VA

Lunenburg County, Virginia Zone 7b May

Lunenburg County, Virginia gardeners: here's your May plan

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

Avg. last frost April 10
Avg. first frost October 29
Soil temp (4") 68°F
Watering Moderate
Pest pressure Moderate
Daylight 14 hrs
  1. Transplant cranberries outside

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

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Cranberries are low-growing, vine-like shrubs that produce tart red berries in fall. They grow in acidic, boggy conditions and are surprisingly easy to cultivate.

Lunenburg County, Virginia is in USDA Zone 7b. The average last spring frost is April 10 and the first fall frost is October 29, giving you a growing season of approximately 202 days.

At an elevation of 777 feet, Lunenburg County receives approximately 41.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Cranberries during the growing season.

Lunenburg County, VA (Zone 7b) Long season
202 days
Last Spring Frost April 10
202 growing days
First Fall Frost October 29
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Lunenburg County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 22
Recommended (50%) ✓ Fits season
Transplant: May 1
Safe Start (90%) ✓ Fits season
Transplant: May 14

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 Lunenburg County

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

Soil pH

Your soil pH (5.4–6.8) is more alkaline than Cranberries prefers (4.0–5.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Cranberries.

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Cranberries.

How to Plant Cranberries

36"
Between Plants
48"
Between Rows

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 321 gal / 100 sq ft

Monthly Watering Guide for Cranberries

Cranberries needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Cranberries Needs Rainfall You Supplement Action
Jan 3.2" 0" ❄️ Dormant
Feb 3.5" 0" ❄️ Dormant
Mar 4.3" 0" ❄️ Dormant
Apr 6.5" 3.3" 3.2" 💧 Light watering
May 6.5" 3.3" 3.2" 💧 Light watering
Jun 6.5" 3.6" 2.9" 💧 Light watering
Jul 6.5" 4" 2.5" 💧 Light watering
Aug 6.5" 4.3" 2.2" 💧 Light watering
Sep 6.5" 3.1" 3.4" 🚿 Regular watering
Oct 6.5" 2.5" 4" 🚿 Regular watering
Nov 3.4" 0" ❄️ Dormant
Dec 3.4" 0" ❄️ Dormant

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

Cranberries 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.

Cranberries needs ~15,969 GDD — county provides 3,535 GDD May not mature

Cranberries Planting Timeline — Lunenburg County, VA

Cranberries Planting Calendar

Activity When Date Range
Transplant Outdoors May 1 May 1 – May 15

· 36" apart · Rows 48" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · Only during dry spells

📅 Days to Maturity

730–1095 days

🧪 Soil pH

Needs 4–5.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7b

📆 Growing Season

202 days in Lunenburg County

Growing Tips for Cranberries in Lunenburg County

Direct sow Cranberries outdoors after April 10 in Lunenburg County when soil has warmed and frost danger has passed.

Your 202.0-day growing season in Lunenburg County is tight for Cranberries (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Create an acidic, consistently moist bed with peat moss. Cranberries do not need to be flooded to grow; flooding is only used for commercial harvesting. Mulch with sand in early spring.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cranberries in Lunenburg County, VA?

Lunenburg County is in Zone 7b with an average last frost of April 10. Plan your Cranberries planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lunenburg County, VA?

Lunenburg County, Virginia is in USDA Hardiness Zone 7b. The average last spring frost is April 10 and first fall frost is October 29.

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Your Lunenburg County Garden Planner — Free

A 24-page printable planner built for Lunenburg 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 Lunenburg County, VA. 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.