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When to plant Corn in Gentry County County,

For Gentry County County, gardeners: plant Corn April 26 through May 17 once soil reads 50°F.

When to Plant Corn in Gentry County, MO

Corn
Gentry County, Missouri Zone 6a June

June to-do list for Gentry County, Missouri

We've pulled the most time-sensitive tasks for Gentry County, Missouri this June and put them front and centre. Tackle them in order.

Avg. last frost April 19
Avg. first frost October 15
Soil temp (4") 69°F
Watering Low
Pest pressure High
Daylight 14.9 hrs
  1. Harvest corn as they ripen

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

To set up a strong July, finish these tasks
  • First harvests: corn

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Corn is a warm-season grass grown for its sweet ears, which are best eaten soon after harvest. It is wind-pollinated and must be planted in blocks for good kernel fill.

Gentry County, Missouri is in USDA Zone 6a. The average last spring frost is April 19 and the first fall frost is October 15, giving you a growing season of approximately 179 days.

At an elevation of 702 feet, Gentry County receives approximately 41.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Corn during the growing season.

Gentry County, MO (Zone 6a) Moderate season
179 days
Last Spring Frost April 19
179 growing days
First Fall Frost October 15
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Gentry County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.7

Drainage

Well Drained

Corn Planting Risk Windows

Early Start (70% safe) ✓ Fits season (60 days to spare)
Transplant: Apr 13 🍅 Harvest: Jun 15 – Aug 10
Recommended (50%) ✓ Fits season (60 days to spare)
Transplant: Apr 19 🍅 Harvest: Jun 21 – Aug 16
Safe Start (90%) ✓ Fits season (62 days to spare)
Transplant: May 3 🍅 Harvest: Jul 5 – Aug 30

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 Gentry County

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

Soil pH

Your soil pH (5.3–6.7) overlaps with Corn's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.1%). Annual compost additions will help Corn.

How to Plant Corn

1"
Planting Depth
12"
Between Plants
36"
Between Rows

Succession Planting Corn

3
successive plantings in your 179-day season

Sow every 6.9 weeks. Last sowing by Jul 07 to harvest before frost.

Corn Water Budget

Plant needs
1.5″/week
Rainfall provides
1.0″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 850 gal / 100 sq ft

Monthly Watering Guide for Corn

Corn needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Corn Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 3" 0" ❄️ Dormant
Apr 6.5" 3.9" 2.6" 💧 Light watering
May 6.5" 4.3" 2.2" 💧 Light watering
Jun 6.5" 5" 1.5" 💧 Light watering
Jul 6.5" 4.2" 2.3" 💧 Light watering
Aug 6.5" 4.5" 2" 💧 Light watering
Sep 6.5" 4.3" 2.2" 💧 Light watering
Oct 6.5" 2.9" 3.6" 🚿 Regular watering
Nov 3.3" 0" ❄️ Dormant
Dec 2.3" 0" ❄️ Dormant

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

Corn 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.

Corn needs ~1,160 GDD — county provides 2,595 GDD Excellent fit

Corn Planting Timeline — Gentry County, MO

Corn Planting Calendar

Activity When Date Range
Direct Sow April 26 Apr 26 – May 17
Harvest June 28 Jun 28 – Aug 23

Plant 1" deep · 12" apart · Rows 36" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6a

📆 Growing Season

179 days in Gentry County

Growing Tips for Corn in Gentry County

Direct sow Corn outdoors after April 19 in Gentry County when soil has warmed and frost danger has passed.

Common pests for Corn in this region include corn earworm and corn borers. Use row covers early in the season and inspect plants weekly.

General growing tips

Plant in blocks of at least 4 rows rather than single rows for proper pollination. Direct sow after soil reaches 60F. Side-dress with nitrogen when plants are knee-high.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Celery

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Corn in Gentry County, MO?

Gentry County is in Zone 6a with an average last frost of April 19. Plan your Corn planting based on this frost date — see the calendar above for exact timing.

What planting zone is Gentry County, MO?

Gentry County, Missouri is in USDA Hardiness Zone 6a. The average last spring frost is April 19 and first fall frost is October 15.

When should I plant Corn in Gentry County County, ?

In Gentry County County, , plant Corn after the last frost (around April 19) and before the first frost (around October 15). Best results when soil holds above 50°F.

What growing zone is Gentry County County, for Corn?

Gentry County County sits in USDA Zone 6a. Corn grows reliably in zones 3a through 11b, so it's a good fit here.

Can Corn grow in Gentry County County's climate?

Yes — Corn grows well in Gentry County County's temperate climate. Gentry County County averages a 179-day frost-free season, with last frost around April 19 and first frost around October 15.

🌱

Your Gentry County Garden Planner — Free

A 22-page printable planner built for Gentry 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 Gentry County, MO. 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.