Blog

When to plant Pumpkin in Brown County County,

Aim to plant Pumpkin in Brown County County on or after April 24; the window stays open through May 15. Brown County County's 182-day frost-free season gives you enough for a full main crop and a short fall succession.

When to Plant Pumpkin in Brown County, IL

Pumpkin
Brown County, Illinois Zone 6a June

This month in Brown County, Illinois

Here's what deserves your attention in Brown County, Illinois this month. Everything below is tailored to Zone 6a and timed around your local frost dates.

Avg. last frost April 17
Avg. first frost October 16
Soil temp (4") 70°F
Watering Low
Pest pressure High
Daylight 14.8 hrs
Looking ahead to July
  • First harvests: pumpkin

Instant PDF download. No spam, unsubscribe any time.

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

Brown County, Illinois is in USDA Zone 6a. The average last spring frost is April 17 and the first fall frost is October 16, giving you a growing season of approximately 182 days.

At an elevation of 868 feet, Brown County receives approximately 36.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Pumpkin during the growing season.

Brown County, IL (Zone 6a) Moderate season
182 days
Last Spring Frost April 17
182 growing days
First Fall Frost October 16

Brown County Soil Profile

Soil Type

Silt Loam

Soil pH

6.3-6.8

Drainage

Well Drained

Pumpkin Planting Risk Windows

Early Start (70% safe) ✓ Fits season (28 days to spare)
Start indoors: Mar 8 Transplant: Apr 26 🍅 Harvest: Jul 26 – Sep 13
Recommended (50%) ✓ Fits season (28 days to spare)
Start indoors: Mar 13 Transplant: May 1 🍅 Harvest: Jul 31 – Sep 18
Safe Start (90%) ✓ Fits season (28 days to spare)
Start indoors: Mar 26 Transplant: May 14 🍅 Harvest: Aug 13 – Oct 1

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 Brown County

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

Soil pH

Your soil pH (6.3–6.8) is within Pumpkin's preferred range (6.0–7.5).

Soil Texture

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

Organic Matter

Organic matter is excellent (5.2%) — 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 753 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 1.7" 0" ❄️ Dormant
Feb 1.4" 0" ❄️ Dormant
Mar 2.3" 0" ❄️ Dormant
Apr 5.6" 3.4" 2.2" 💧 Light watering
May 5.6" 4.2" 1.4" 💧 Light watering
Jun 5.6" 4.6" 1" 💧 Light watering
Jul 5.6" 4.5" 1.1" 💧 Light watering
Aug 5.6" 3.6" 2" 💧 Light watering
Sep 5.6" 3.4" 2.2" 💧 Light watering
Oct 5.6" 2.5" 3.1" 🚿 Regular watering
Nov 2.6" 0" ❄️ Dormant
Dec 2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Brown 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 ~1,486 GDD — county provides 2,639 GDD Excellent fit

Pumpkin Planting Timeline — Brown County, IL

Pumpkin Planting Calendar

Activity When Date Range
Start Indoors March 13 Mar 13 – Mar 27
Transplant Outdoors May 1 May 1 – May 15
Direct Sow April 24 Apr 24 – May 15
Harvest July 31 Jul 31 – Sep 18

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

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

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

182 days in Brown County

Growing Tips for Pumpkin in Brown County

Direct sow Pumpkin outdoors after April 17 in Brown 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 Brown County, IL?

Brown County is in Zone 6a with an average last frost of April 17. Plan your Pumpkin planting based on this frost date — see the calendar above for exact timing.

What planting zone is Brown County, IL?

Brown County, Illinois is in USDA Hardiness Zone 6a. The average last spring frost is April 17 and first fall frost is October 16.

When should I plant Pumpkin in Brown County, ?

In Brown County, , plant Pumpkin after the last frost (around April 17) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is Brown County, for Pumpkin?

Brown 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 Brown County's climate?

Yes — Pumpkin grows well in Brown County's temperate climate. Brown County averages a 182-day frost-free season, with last frost around April 17 and first frost around October 16.

🌱

Your Brown County Garden Planner — Free

A 22-page printable planner built for Brown 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Brown County, IL. 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.