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When to plant Pumpkin in Delaware County County,

For Pumpkin in Delaware County County, the safe spring window opens around May 3 and closes around May 24. Last expected frost is April 26, first fall frost October 16, giving a 173-day growing season.

When to Plant Pumpkin in Delaware County, IN

Pumpkin
Delaware County, Indiana Zone 6a June

Top priorities for Delaware County, Indiana gardeners in June

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Avg. last frost April 26
Avg. first frost October 16
Soil temp (4") 69°F
Watering Moderate
Pest pressure High
Daylight 14.8 hrs

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Pumpkins are large-fruited squash varieties grown for eating, decoration, and seed production. They require ample space and a long, warm growing season.

Delaware County, Indiana is in USDA Zone 6a. The average last spring frost is April 26 and the first fall frost is October 16, giving you a growing season of approximately 173 days.

At an elevation of 739 feet, Delaware County receives approximately 31.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Pumpkin to ensure they mature before fall.

Delaware County, IN (Zone 6a) Moderate season
173 days
Last Spring Frost April 26
173 growing days
First Fall Frost October 16
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Delaware County Soil Profile

Soil Type

Silt Loam

Soil pH

6-7

Drainage

Well Drained

Pumpkin Planting Risk Windows

Early Start (70% safe) ✓ Fits season (15 days to spare)
Start indoors: Mar 18 Transplant: May 6 🍅 Harvest: Aug 5 – Sep 23
Recommended (50%) ✓ Fits season (19 days to spare)
Start indoors: Mar 22 Transplant: May 10 🍅 Harvest: Aug 9 – Sep 27
Safe Start (90%) ✓ Fits season (13 days to spare)
Start indoors: Apr 7 Transplant: May 26 🍅 Harvest: Aug 25 – Oct 13

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 Delaware County

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

Soil pH

Your soil pH (6.0–7.0) is within Pumpkin's preferred range (6.0–7.5).

Soil Texture

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

Organic Matter

Organic matter is excellent (4.8%) — Pumpkin will thrive.

How to Plant Pumpkin

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Pumpkin Water Budget

Plant needs
1.3″/week
Rainfall provides
0.8″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 839 gal / 100 sq ft

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 1.3" 0" ❄️ Dormant
Feb 1.5" 0" ❄️ Dormant
Mar 2" 0" ❄️ Dormant
Apr 5.6" 3.1" 2.5" 💧 Light watering
May 5.6" 3.6" 2" 💧 Light watering
Jun 5.6" 3.7" 1.9" 💧 Light watering
Jul 5.6" 3.6" 2" 💧 Light watering
Aug 5.6" 3.5" 2.1" 💧 Light watering
Sep 5.6" 2.4" 3.2" 🚿 Regular watering
Oct 5.6" 2.5" 3.1" 🚿 Regular watering
Nov 2.4" 0" ❄️ Dormant
Dec 1.5" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Delaware 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 needs ~1,256 GDD — county provides 2,119 GDD Excellent fit

Pumpkin Planting Timeline — Delaware County, IN

Pumpkin Planting Calendar

Activity When Date Range
Start Indoors March 22 Mar 22 – Apr 5
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

MonthActivities
January
February
March Start Indoors
April Start Indoors
May Transplant Outdoors Direct Sow
June
July
August Harvest
September Harvest
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.3"/week · 1-2 times/week

📅 Days to Maturity

85–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 6a

📆 Growing Season

173 days in Delaware County

Growing Tips for Pumpkin in Delaware County

Direct sow Pumpkin outdoors after April 26 in Delaware 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

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Pumpkin in Delaware County, IN?

Delaware County is in Zone 6a 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 Delaware County, IN?

Delaware County, Indiana is in USDA Hardiness Zone 6a. The average last spring frost is April 26 and first fall frost is October 16.

When should I plant Pumpkin in Delaware County, ?

In Delaware County, , plant Pumpkin after the last frost (around April 26) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is Delaware County, for Pumpkin?

Delaware County sits in USDA Zone 6a. Pumpkin grows reliably in zones 3a through 10b, so it's a good fit here.

Can Pumpkin grow in Delaware County's climate?

Yes — Pumpkin grows well in Delaware County's temperate climate. Delaware County averages a 173-day frost-free season, with last frost around April 26 and first frost around October 16.

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Your Delaware County Garden Planner — Free

A 22-page printable planner built for Delaware County (Zone 6a). 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 Delaware County, IN. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.