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When to Plant Quince in Windham County, VT

Windham County, Vermont Zone 5b May

This month in Windham County, Vermont

We've pulled the most time-sensitive tasks for Windham County, Vermont this May and put them front and centre. Tackle them in order.

Avg. last frost May 12
Avg. first frost October 7
Soil temp (4") 56°F
Watering Low
Pest pressure Low
Daylight 14.5 hrs
Before June arrives, get these ready
  • Transplants going out: quince

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Quince is a small ornamental tree producing fragrant, golden fruits that are too hard and astringent to eat raw but transform into a beautiful rose-colored paste when cooked.

Windham County, Vermont is in USDA Zone 5b. The average last spring frost is May 12 and the first fall frost is October 7, giving you a growing season of approximately 148 days.

At an elevation of 1,164 feet, Windham County receives approximately 49.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Quince during the growing season.

Windham County, VT (Zone 5b) Short season
148 days
Last Spring Frost May 12
148 growing days
First Fall Frost October 7

Windham County Soil Profile

Soil Type

Silt Loam

Soil pH

4.8-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 28
Recommended (50%) ✓ Fits season
Transplant: Jun 2
Safe Start (90%) ✓ Fits season
Transplant: Jun 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 Windham County

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

Soil pH

Your soil pH (4.8–6.3) is more acidic than Quince prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.4%). Annual compost additions will help Quince.

How to Plant Quince

120"
Between Plants
144"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.4″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Quince

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

Month Quince Needs Rainfall You Supplement Action
Jan 3.2" 0" ❄️ Dormant
Feb 3" 0" ❄️ Dormant
Mar 3.9" 0" ❄️ Dormant
Apr 4.6" 0" ❄️ Dormant
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 4.9" 0" ✅ Rainfall sufficient
Jul 4.3" 5.4" 0" ✅ Rainfall sufficient
Aug 4.3" 4.1" 0.2" 💧 Light watering
Sep 4.3" 3.9" 0.4" 💧 Light watering
Oct 4.3" 4.3" 0" ✅ Rainfall sufficient
Nov 4" 0" ❄️ Dormant
Dec 3.8" 0" ❄️ Dormant

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

Quince 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.

Quince needs ~21,170 GDD — county provides 2,146 GDD May not mature

Quince Planting Timeline — Windham County, VT

Quince Planting Calendar

Activity When Date Range
Transplant Outdoors June 2 Jun 2 – Jun 16

· 120" apart · Rows 144" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

1095–1825 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 5b

📆 Growing Season

148 days in Windham County

Growing Tips for Quince in Windham County

Direct sow Quince outdoors after May 12 in Windham County when soil has warmed and frost danger has passed.

Your 148.0-day growing season in Windham County is tight for Quince (1095.0-1825.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant in well-drained soil in a warm, sheltered location. Quince is self-fertile. Harvest after frost when fruit is golden and fragrant. Fire blight can be an issue; choose resistant varieties.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Quince in Windham County, VT?

Windham County is in Zone 5b with an average last frost of May 12. Plan your Quince planting based on this frost date — see the calendar above for exact timing.

What planting zone is Windham County, VT?

Windham County, Vermont is in USDA Hardiness Zone 5b. The average last spring frost is May 12 and first fall frost is October 7.

🌱

Your Windham County Garden Planner — Free

A 24-page printable planner built for Windham County (Zone 5b). 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 Windham County, VT. 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.