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How to Pollinate—and Avoid Cross-Pollinating—Corn

Gardening Guide: The Everything Corn Guide: All You Need to Know About Growing, Harvesting, Cooking, and Eating the All-American Crop

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How to Pollinate—and Avoid Cross-Pollinating—Corn

By Norann Oleson

Inflorescence of corn plant

Inflorescence of corn plant

In theory, corn plants can pollinate themselves—but you’ll be far more successful if you give them some help. Corn plants have both male and female parts. Because corn is a grass, its flowers—the male part—grow in the form of tassels. This part blooms at the top of the stalk. As the tassel ripens, it sends the pollen down to the fronds, where the female parts are located. Their flowers are the silks. Each strand of silk is attached to a kernel of corn.

Pollination happens when pollen touches the strand of silk. But—surprise! Most of an ear’s pollination, 97%, comes from other corn plants. This is why it’s important to know when and how to pollinate corn.

There are two main ways to pollinate corn:

  • Wind Method: The wind is the natural corn pollinator, lifting the pollen from the ears of one plant on a summer breeze and depositing it gently on other plants. Proximity of corn plants is key to wind pollination. This is why home gardeners should plant their corn in blocks of at least four rows instead of one or two long rows. To avoid cross-pollination, plant different varieties of corn 150 feet or more apart, or time your planting so the varieties tassel two weeks apart.
  • Hand-Pollinating Method: This method takes more of the gardener’s time, but it’s fun! Watch for the tassels to be fully open and shedding their yellow pollen. This happens two to three days before the silk emerges. As soon as the silk appears, it’s time to start pollinating. In the morning—or evening before dewfall—snap the tassels off a few of the ears and dust them over the emerging silks. Repeat this every morning (or evening) for a week, starting at the opposite ends of the rows each time so you distribute the pollen evenly.

Have you faced any challenges with pollinating your corn plants? How do you handle ensuring the right pollination for your plants? Please share your experience with pollinating your corn in the comment section below

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TABLE OF CONTENTS

  • Curator’s Corner
  • Introduction
  • Feature Articles

  • Types of Corn Plants
  • How to Pollinate—and Avoid Cross-Pollinating—Corn
  • Classification of Corn Plants
  • Choosing to Grow Corn from Seeds or Seedlings
  • Growing Corn in Open Land, in Containers, or in Raised Beds
  • Ensuring the Right Sunlight, Soil, Fertilizer, and Water for Your Corn Plants
  • How to Spot, Treat, and Prevent Corn Diseases Such as Corn Smut
  • What to Do About Pests that Can Harm Your Corn Plants
  • The Right Way to Weed Your Corn Garden
  • Essential Tools and Equipment for Growing and Enjoying Corn
  • When and How to Harvest Your Corn
  • Plant Profiles

  • Silver Queen Hybrid Corn
  • Ruby Queen Hybrid Corn
  • Picasso Hybrid Corn
  • Nirvana Hybrid Corn
  • Jubilee Hybrid Corn
  • Honey Select Hybrid Corn
  • Golden Bantam Heirloom Corn
  • Ambrosia Hybrid Corn
  • Recipes

  • Corny Cornbread
  • Tagliatelle with Corn and Tomatoes
  • Vegetarian Corn Chowder
  • Fresh Sautéed Corn
  • Zucchini Corn Fritters
  • Corn, Tomato, and Avocado Salad
  • Mexican Street Corn
  • Additional Articles

  • Nutrition Facts about Corn
  • Home Remedies & Health Benefits of Corn
  • Resources about Corn
  • Corn Glossary
  • Related Articles

  • The Easiest Vegetables to Grow in Pots
  • Easy Chicken and Corn Skillet Recipe
  • How to Hand-Pollinate Corn and Stop Growing Single-Kernel Cobs
  • The Everything Corn Guide—All You Need to Know About Growing, Harvesting, Cooking, and Eating the All-American Crop

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