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When to Plant Pumpkin in Holt County, MO

Holt County, Missouri Zone 6a May

This month in Holt County, Missouri

A quick May briefing for Holt County, Missouri gardeners — what's urgent, what's next, and what can wait.

Avg. last frost April 21
Avg. first frost October 15
Soil temp (4") 60°F
Watering Low
Pest pressure Low
Daylight 14.2 hrs
  1. Time to transplant pumpkin

    Your last frost (April 21) has passed. These warm-season crops can handle outdoor soil now.

  2. Sow pumpkin in trays indoors

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

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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.

Holt County, Missouri is in USDA Zone 6a. The average last spring frost is April 21 and the first fall frost is October 15, giving you a growing season of approximately 177 days.

At an elevation of 819 feet, Holt County receives approximately 39.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of Pumpkin to ensure they mature before fall.

Holt County, MO (Zone 6a) Moderate season
177 days
Last Spring Frost April 21
177 growing days
First Fall Frost October 15
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Holt County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (22 days to spare)
Start indoors: Mar 10 Transplant: Apr 28 🍅 Harvest: Jul 28 – Sep 15
Recommended (50%) ✓ Fits season (23 days to spare)
Start indoors: Mar 17 Transplant: May 5 🍅 Harvest: Aug 4 – Sep 22
Safe Start (90%) ✓ Fits season (25 days to spare)
Start indoors: Mar 29 Transplant: May 17 🍅 Harvest: Aug 16 – Oct 4

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 Holt County

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

Soil pH

Your soil pH (5.5–7.1) overlaps with Pumpkin's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Pumpkin.

How to Plant Pumpkin

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

Plant Water Budget

Plant needs
1.3″/week
Rainfall provides
0.9″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 564 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 1.6" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.8" 0" ❄️ Dormant
Apr 5.6" 3.7" 1.9" 💧 Light watering
May 5.6" 5" 0.6" 💧 Light watering
Jun 5.6" 4.5" 1.1" 💧 Light watering
Jul 5.6" 4.4" 1.2" 💧 Light watering
Aug 5.6" 4.1" 1.5" 💧 Light watering
Sep 5.6" 3.1" 2.5" 💧 Light watering
Oct 5.6" 3.5" 2.1" 💧 Light watering
Nov 3.1" 0" ❄️ Dormant
Dec 2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Holt 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 ~1,332 GDD — county provides 2,301 GDD Excellent fit

Pumpkin Planting Timeline — Holt County, MO

Pumpkin Planting Calendar

Activity When Date Range
Start Indoors March 17 Mar 17 – Mar 31
Transplant Outdoors May 5 May 5 – May 19
Direct Sow April 28 Apr 28 – May 19
Harvest August 4 Aug 4 – Sep 22

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
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: acceptable

🗺️ USDA Zone

Zone 6a

📆 Growing Season

177 days in Holt County

Growing Tips for Pumpkin in Holt County

Direct sow Pumpkin outdoors after April 21 in Holt 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 Holt County, MO?

Holt County is in Zone 6a with an average last frost of April 21. Plan your Pumpkin planting based on this frost date — see the calendar above for exact timing.

What planting zone is Holt County, MO?

Holt County, Missouri is in USDA Hardiness Zone 6a. The average last spring frost is April 21 and first fall frost is October 15.

🌱

Your Holt County Garden Planner — Free

A 24-page printable planner built for Holt 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 Holt County, MO. 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.