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When to Plant Medlar in Berkshire County, MA

Berkshire County, Massachusetts Zone 5b May

Top priorities for Berkshire County, Massachusetts gardeners in May

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

Avg. last frost May 6
Avg. first frost October 12
Soil temp (4") 58°F
Watering Moderate
Pest pressure Low
Daylight 14.4 hrs
  1. Harden off and plant medlar

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

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Medlar is a small ornamental tree producing unusual open-ended fruits that must be bletted (softened by frost) before eating. The flavor is complex, like spiced apple butter.

Berkshire County, Massachusetts is in USDA Zone 5b. The average last spring frost is May 6 and the first fall frost is October 12, giving you a growing season of approximately 159 days.

At an elevation of 392 feet, Berkshire County receives approximately 41.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Medlar during the growing season.

Berkshire County, MA (Zone 5b) Moderate season
159 days
Last Spring Frost May 6
159 growing days
First Fall Frost October 12

Berkshire County Soil Profile

Soil Type

Silt Loam

Soil pH

5.1-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 20
Recommended (50%) ✓ Fits season
Transplant: May 27
Safe Start (90%) ✓ Fits season
Transplant: Jun 8

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 Berkshire County

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

Soil pH

Your soil pH (5.1–6.7) is more acidic than Medlar prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

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

How to Plant Medlar

120"
Between Plants
144"
Between Rows

Plant 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 Medlar

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

Month Medlar Needs Rainfall You Supplement Action
Jan 3.1" 0" ❄️ Dormant
Feb 2.8" 0" ❄️ Dormant
Mar 3.6" 0" ❄️ Dormant
Apr 3.7" 0" ❄️ Dormant
May 4.3" 3.7" 0.6" 💧 Light watering
Jun 4.3" 4" 0.3" 💧 Light watering
Jul 4.3" 3.5" 0.8" 💧 Light watering
Aug 4.3" 3.6" 0.7" 💧 Light watering
Sep 4.3" 3.8" 0.5" 💧 Light watering
Oct 4.3" 3.2" 1.1" 💧 Light watering
Nov 3.2" 0" ❄️ Dormant
Dec 3" 0" ❄️ Dormant

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

Medlar 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.

Medlar needs ~21,170 GDD — county provides 2,305 GDD May not mature

Medlar Planting Timeline — Berkshire County, MA

Medlar Planting Calendar

Activity When Date Range
Transplant Outdoors May 27 May 27 – Jun 10

· 120" apart · Rows 144" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May Transplant Outdoors
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

159 days in Berkshire County

Growing Tips for Medlar in Berkshire County

Direct sow Medlar outdoors after May 06 in Berkshire County when soil has warmed and frost danger has passed.

Your 159.0-day growing season in Berkshire County is tight for Medlar (1095.0-1825.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant in well-drained soil. Medlars are self-fertile and need minimal pruning. Harvest after the first frost and allow to soften (blet) indoors for 2-3 weeks before eating.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Medlar in Berkshire County, MA?

Berkshire County is in Zone 5b with an average last frost of May 6. Plan your Medlar planting based on this frost date — see the calendar above for exact timing.

What planting zone is Berkshire County, MA?

Berkshire County, Massachusetts is in USDA Hardiness Zone 5b. The average last spring frost is May 6 and first fall frost is October 12.

🌱

Your Berkshire County Garden Planner — Free

A 24-page printable planner built for Berkshire 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 Berkshire County, MA. Local conditions may vary. Last updated: May 2026.

Sources & credits

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