When to Plant Pumpkin in Bristol County, MA
May in Bristol County, Massachusetts — your action list
Here's what deserves your attention in Bristol County, Massachusetts this month. Everything below is tailored to Zone 7a and timed around your local frost dates.
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Transplant pumpkin outside
Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.
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Sow pumpkin where they'll grow
Sow every 2 weeks for a continuous harvest. A single big planting means a single big glut.
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Start pumpkin indoors
These need a head start before your last frost (April 26). Sow into cells now so you're ready to transplant in a few weeks.
Pumpkins are large-fruited squash varieties grown for eating, decoration, and seed production. They require ample space and a long, warm growing season.
Bristol County, Massachusetts is in USDA Zone 7a. The average last spring frost is April 26 and the first fall frost is October 17, giving you a growing season of approximately 174 days.
At an elevation of 833 feet, Bristol County receives approximately 47.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Pumpkin during the growing season.
Bristol County Soil Profile
Soil Type
Silt Loam
Soil pH
5.1-6.7
Drainage
Well Drained
Plant Planting Risk Windows
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 Bristol County
How your county's soil matches Pumpkin's growing requirements.
Soil pH
Your soil pH (5.1–6.7) is more acidic than Pumpkin prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Bristol County is excellent for Pumpkin — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.7%). Annual compost additions will help Pumpkin.
How to Plant Pumpkin
Plant Water Budget
Monthly Watering Guide for Pumpkin
Pumpkin needs approximately 1.3 inches of water per week (5.6" per month). Here's how your county's rainfall compares month by month.
| Month | Pumpkin Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.8" | 0" | ❄️ Dormant |
| Feb | — | 2.9" | 0" | ❄️ Dormant |
| Mar | — | 3.5" | 0" | ❄️ Dormant |
| Apr | 5.6" | 4.4" | 1.2" | 💧 Light watering |
| May | 5.6" | 4" | 1.6" | 💧 Light watering |
| Jun | 5.6" | 4.4" | 1.2" | 💧 Light watering |
| Jul | 5.6" | 4.3" | 1.3" | 💧 Light watering |
| Aug | 5.6" | 4.3" | 1.3" | 💧 Light watering |
| Sep | 5.6" | 4.2" | 1.4" | 💧 Light watering |
| Oct | 5.6" | 4.2" | 1.4" | 💧 Light watering |
| Nov | — | 3.7" | 0" | ❄️ Dormant |
| Dec | — | 3.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Bristol County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Pumpkin 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.
Pumpkin Planting Timeline — Bristol County, MA
Pumpkin Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 29 | Mar 29 – Apr 12 |
| Transplant Outdoors | May 10 | May 10 – May 24 |
| Direct Sow | May 3 | May 3 – May 24 |
| Harvest | August 9 | Aug 9 – Sep 27 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | — |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1.3"/week · Only during dry spells
📅 Days to Maturity
85–120 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 7a
📆 Growing Season
174 days in Bristol County
Growing Tips for Pumpkin in Bristol County
Direct sow Pumpkin outdoors after April 26 in Bristol County when soil has warmed and frost danger has passed.
Common pests for Pumpkin in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow on mounds after last frost. Allow 6-10 feet between plants. Slip a board under developing fruit to prevent rot. Harvest when rind is hard and deep in color.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Pumpkin in Other Locations
Frequently Asked Questions
When should I plant Pumpkin in Bristol County, MA?
Bristol County is in Zone 7a with an average last frost of April 26. Plan your Pumpkin planting based on this frost date — see the calendar above for exact timing.
What planting zone is Bristol County, MA?
Bristol County, Massachusetts is in USDA Hardiness Zone 7a. The average last spring frost is April 26 and first fall frost is October 17.
Your Bristol County Garden Planner — Free
A 24-page printable planner built for Bristol 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.