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Field Corn Growing Guide
Growing Guide

Field Corn

Field corn is grown primarily for grain, livestock feed, and traditional food products like cornmeal, grits, and hominy. Unlike sweet corn, field corn is harvested after the kernels fully mature and dry. Many gardeners grow heirloom field corn varieties for grinding, roasting ears, or decorative uses.

Quick Overview

Category Details
Planting Time Spring after frost
Soil Temperature 60–95°F (65–85°F ideal)
Sunlight Requirements Full Sun (8+ hours)
Watering Requirements 1–2" per week
Spacing (In-Ground) Rows: 30–36", Plants: 8–12"
Fertilizer Guidelines Heavy feeder – nitrogen throughout season

Growing Guide Details

Plant Classifications

Field corn varieties are commonly categorized by their kernel structure and intended use. Dent corn is widely grown for animal feed, cornmeal, and processed foods. Flint corn has very hard kernels and is often used for traditional foods or decoration. Heirloom field corn varieties are popular with gardeners for grinding into cornmeal, making grits, roasting ears, or preserving traditional corn varieties.

Heirloom Corn
Open-pollinated varieties passed down through generations. Seeds can be saved and replanted each year.

Hybrid Corn
Bred for improved yields, uniformity, and disease resistance. Seeds should not be saved.

Most large-scale agricultural field corn today is genetically modified (GMO), but heirloom and non-GMO varieties remain popular with home gardeners.

What Variety to Choose?

💡

• Bloody Butcher: Historic red heirloom dent corn commonly used for cornmeal, grits, and roasting ears.

• Hickory King: Large white dent corn known for excellent milling quality and traditional hominy production.

• Reid’s Yellow Dent: Classic yellow dent corn widely used for cornmeal, livestock feed, and grain production.

• Jimmy Red: Historic Southern dent corn prized for making rich, flavorful grits and cornmeal.

When to Plant

Outdoor Planting:
Plant seeds outdoors after the last frost once soil temperatures reach at least 60°F. Warmer soil (65–70°F) results in faster germination and stronger plants.

Light & Space Requirements

Sunlight:
Corn requires full sun for strong stalk development and proper ear formation.

In-Ground Spacing:
Row spacing: 30–36 inches
Plant spacing: 8–12 inches

Corn should be planted in blocks of multiple rows rather than a single long row to improve pollination.

Raised Beds:
Plant in blocks with 8–12 inches between plants in all directions to ensure good pollination.

Pro Tip:
Wind pollination is critical for corn. Larger blocks of plants produce fuller ears.

Hoss Jimmy Red Corn

Jimmy Red Corn

Soil & Fertility

Corn is a heavy feeder and benefits from nutrient-rich soil.

Soil Requirements:
pH: 6.0–6.8
Loose, well-drained soil with high organic matter

Fertilizer Schedule:

Before Planting:
Mix 2 cups of HOSS Complete Organic Fertilizer per 10 ft of row

2 Weeks After Transplanting:
Using the Hoss Fertilizer Injector, Mix 1 cup ofHoss Premium 20-20-20 Fertilizer -AND -1-2 cups of Hoss Micro-Boost Micronutrient Supplement per 20 ft. of row.

4 Weeks After Transplanting:
Using the Hoss Fertilizer Injector, Mix 1 cup ofHoss Premium 20-20-20 Fertilizer -AND -1-2 cups of Hoss Micro-Boost Micronutrient Supplement per 20 ft. of row.

Alternate Every 14 Days:
Mix 2 cups ofHoss Premium Chilean Nitrate -AND -1-2 cups of Hoss Micro-Boost Micronutrient Supplementper 20 ft. of row.

Pro Tip: Discontinue fertilizing schedule once the tassel starts to develop.

Pest & Disease Control

Pest/Disease Control Method
Corn Leaf Aphids

Garden Insect Spray, Horticulture Oil, Bug Buster-O, Take Down, Take Out
Corn Earworm

Garden Insect Spray, Bug Buster-O, Take Out
Stinkbugs

Garden Insect Spray, Horticulture Oil, Take Down, Take Out
Flea Beetle

Horticulture Oil, Bug Buster-O, Take Down, Take Out
Corn Borer

Take Down, Take Out
Cutworms

Diatomaceous Earth, Take Out
Common Rust

Complete Disease Control, Fungi Max
Grey Leaf Spot

Complete Disease Control, Fungi Max
Blight

Complete Disease Control, Fungi Max

Irrigation & Watering Schedule

Corn requires consistent moisture throughout the growing season, especially during tasseling and ear development.

Provide 1–2 inches of water per week, increasing during hot weather. Inconsistent watering during pollination can result in poorly filled ears.

Drip irrigation or soaker hoses are recommended to maintain even soil moisture.

Reids Yellow Dent Corn

Reid's Yellow Dent Corn

Harvesting & Storage

Harvest:
Corn is ready to harvest about 18–24 days after silks first appear. Field corn is harvested once the ears and kernels have fully dried on the stalk.

The husks turn brown and kernels become hard. Ears can be picked and allowed to dry further before shelling.

Twist ears downward and pull to remove them from the stalk.

Storage:
Properly dried corn can store for many months to years if kept in a cool, dry location.

Preservation Tip:
Corn freezes well. Blanch ears or kernels before freezing for long-term storage.

Sustainability & Garden Tips

• Plant corn in blocks rather than long rows for better pollination
• Rotate crops yearly to prevent pest buildup
• Mulch to conserve moisture and suppress weeds
• Compost healthy stalks after harvest

FAQs

Why are my corn ears not fully filled?

Usually caused by poor pollination.

How many ears does one plant produce?

Most plants produce 1–2 ears.

Can field corn be eaten fresh?

Yes, when harvested early it can be used as roasting ears.

How long does field corn take to mature?

Typically 90–120 days depending on the variety.

Why are my corn stalks falling over?

Strong winds, shallow roots, or nutrient imbalance can cause lodging. Hill soil around plants for support.

Published on March 16, 2026
Updated on March 16, 2026