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When to Plant Corn in Kingman County, KS

Kingman County, Kansas Zone 7a May

Top priorities for Kingman County, Kansas gardeners in May

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Kingman County, Kansas.

Avg. last frost April 14
Avg. first frost October 24
Soil temp (4") 66°F
Watering Moderate
Pest pressure Low
Daylight 14 hrs
Looking ahead to June
  • 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.

Kingman County, Kansas is in USDA Zone 7a. The average last spring frost is April 14 and the first fall frost is October 24, giving you a growing season of approximately 193 days.

At an elevation of 746 feet, Kingman County receives approximately 21.1 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Corn during the growing season.

Kingman County, KS (Zone 7a) Moderate season
193 days
Last Spring Frost April 14
193 growing days
First Fall Frost October 24
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Kingman County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (74 days to spare)
Transplant: Apr 8 🍅 Harvest: Jun 10 – Aug 5
Recommended (50%) ✓ Fits season (74 days to spare)
Transplant: Apr 14 🍅 Harvest: Jun 16 – Aug 11
Safe Start (90%) ✓ Fits season (80 days to spare)
Transplant: Apr 26 🍅 Harvest: Jun 28 – Aug 23

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 Kingman County

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

Soil pH

Your soil pH (6.7–7.6) is more alkaline than Corn prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is excellent (4.3%) — Corn will thrive.

How to Plant Corn

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

Succession Planting Corn

3
successive plantings in your 193-day season

Sow every 6.9 weeks. Last sowing by Jul 16 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.5″/week
You supply
1.3″/week
Watering frequency 2-3 times/week
Season total 2,145 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 0.6" 0" ❄️ Dormant
Feb 0.6" 0" ❄️ Dormant
Mar 1.2" 0" ❄️ Dormant
Apr 6.5" 2.5" 4" 🚿 Regular watering
May 6.5" 3.5" 3" 💧 Light watering
Jun 6.5" 3" 3.5" 🚿 Regular watering
Jul 6.5" 2.9" 3.6" 🚿 Regular watering
Aug 6.5" 2.7" 3.8" 🚿 Regular watering
Sep 6.5" 1.8" 4.7" 🚿 Regular watering
Oct 6.5" 1.2" 5.3" 🚿 Regular watering
Nov 0.7" 0" ❄️ Dormant
Dec 0.5" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Kingman 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 ~1,400 GDD — county provides 3,377 GDD Excellent fit

Corn Planting Timeline — Kingman County, KS

Corn Planting Calendar

Activity When Date Range
Direct Sow April 21 Apr 21 – May 12
Harvest June 23 Jun 23 – Aug 18

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 · 2-3 times/week

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7a

📆 Growing Season

193 days in Kingman County

Growing Tips for Corn in Kingman County

Direct sow Corn outdoors after April 14 in Kingman 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.

Kingman County receives only 21" of rain annually. Corn needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

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 Kingman County, KS?

Kingman County is in Zone 7a with an average last frost of April 14. Plan your Corn planting based on this frost date — see the calendar above for exact timing.

What planting zone is Kingman County, KS?

Kingman County, Kansas is in USDA Hardiness Zone 7a. The average last spring frost is April 14 and first fall frost is October 24.

🌱

Your Kingman County Garden Planner — Free

A 24-page printable planner built for Kingman 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.

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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 Kingman County, KS. 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.