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When to plant Corn in Sizerock, KY

Sizerock's climate puts the Corn spring window between April 29 and May 20. most warm-season crops establish quickly once soil holds above 60°F.

When to Plant Corn in Sizerock, KY

Corn
Leslie County, Kentucky Zone 7a July

Your July game plan for Leslie County, Kentucky

Your garden in Leslie County, Kentucky is working on a schedule, even when you're not. Here's where you should be this July.

Avg. last frost April 22
Avg. first frost October 20
Soil temp (4") 77°F
Watering Low
Pest pressure High
Daylight 14.3 hrs
  1. It's harvest week for corn

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

August prep starts now
  • 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.

Sizerock, Kentucky is in USDA Zone 7a. The average last spring frost is April 22 and the first fall frost is October 20, giving you a growing season of approximately 181 days.

At an elevation of 2,667 feet, Leslie County receives approximately 45 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Corn during the growing season.

Sizerock, KY (Zone 7a) Moderate season
181 days
Last Spring Frost April 22
181 growing days
First Fall Frost October 20

Sizerock Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.8

Drainage

Well Drained

Corn Planting Risk Windows

Early Start (70% safe) ✓ Fits season (66 days to spare)
Transplant: Apr 15 🍅 Harvest: Jun 17 – Aug 12
Recommended (50%) ✓ Fits season (62 days to spare)
Transplant: Apr 22 🍅 Harvest: Jun 24 – Aug 19
Safe Start (90%) ✓ Fits season (62 days to spare)
Transplant: May 4 🍅 Harvest: Jul 6 – Aug 31

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 Sizerock

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

Soil pH

Your soil pH (5.7–6.8) overlaps with Corn's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Corn.

Organic Matter

Organic matter is moderate (2.7%). 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 181-day season

Sow every 6.9 weeks. Last sowing by Jul 12 to harvest before frost.

Corn Water Budget

Plant needs
1.5″/week
Rainfall provides
1.0″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 11 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 3.9" 0" ❄️ Dormant
Feb 3.9" 0" ❄️ Dormant
Mar 4.7" 0" ❄️ Dormant
Apr 6.5" 3.6" 2.9" 💧 Light watering
May 6.5" 3.4" 3.1" 💧 Light watering
Jun 6.5" 3.6" 2.9" 💧 Light watering
Jul 6.5" 4.7" 1.8" 💧 Light watering
Aug 6.5" 4" 2.5" 💧 Light watering
Sep 6.5" 3.2" 3.3" 🚿 Regular watering
Oct 6.5" 3.1" 3.4" 🚿 Regular watering
Nov 3.6" 0" ❄️ Dormant
Dec 3.2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Leslie 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 ~1,340 GDD — county provides 3,031 GDD Excellent fit

Corn Planting Timeline — Sizerock, KY

Corn Planting Calendar

Activity When Date Range
Direct Sow April 29 Apr 29 – May 20
Harvest July 1 Jul 1 – Aug 26

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · Only during dry spells

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

181 days in Leslie County

Growing Tips for Corn in Sizerock

Direct sow Corn outdoors after April 22 in Leslie 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 →

When should I plant Corn in Sizerock, KY?

In Sizerock, KY, plant Corn after the last frost (around April 22) and before the first frost (around October 20). Best results when soil holds above 50°F.

What growing zone is Sizerock, KY for Corn?

Sizerock sits in USDA Zone 7a. Corn grows reliably in zones 3a through 11b, so it's a good fit here.

Can Corn grow in Sizerock's climate?

Yes — Corn grows well in Sizerock's temperate climate. Sizerock averages a 181-day frost-free season, with last frost around April 22 and first frost around October 20.

🌱

Your Leslie County Garden Planner — Free

A 22-page printable planner built for Leslie 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 Leslie County, KY. Local conditions may vary. Last updated: July 2026.