Corn: Sow and Grow GuideUpdated 14 days ago

Corn is a warm-season crop that thrives in sunny conditions and fertile soil. Here's a concise guide to successfully sowing and growing corn.

When to Sow

Sow corn seeds outdoors after the last frost when the soil temperature has reached at least 60°F. Corn is a tender crop and should not be planted too early. For a continuous harvest, sow seeds every 2 weeks until early summer.

Outdoor Sowing

Choose a sunny location with well-drained, fertile soil. Sow seeds 1 inch deep and 8-12 inches apart in rows spaced 24-36 inches apart. Corn is wind-pollinated, so plant in blocks of short rows rather than one long row to ensure proper pollination. Water gently after sowing and keep the soil consistently moist until germination, which typically takes 7-10 days.

Care and Maintenance

Corn requires full sun and regular watering, especially during the flowering and ear-forming stages. Mulch around the plants to retain moisture and suppress weeds. Corn is a heavy feeder, so side-dress with compost or a balanced fertilizer when the plants are about 12 inches tall and again when they start to tassel.

Pests and Diseases

Common pests include corn earworms, cutworms, and aphids. Handpick pests or use organic insecticides if necessary. To prevent disease, practice crop rotation and ensure good air circulation by spacing plants properly. Corn can be susceptible to fungal diseases like smut and rust, which can be minimized by keeping the plants healthy and stress-free.

Harvesting

Corn is ready to harvest when the silks at the end of the ears turn brown, and the kernels are plump and milky when pressed. To harvest, hold the ear firmly and twist it downward to snap it off the stalk. For the best flavor, harvest in the morning and cook or preserve the corn as soon as possible.

Garden Use

Corn is traditionally planted in "Three Sisters" gardens alongside beans and squash, which help support and enrich each other. Corn can also be used as a natural trellis for climbing plants like beans. Ensure that corn is planted in a location that receives plenty of sunlight and has room to accommodate its height and spread.

For further details, visit the full guide on the Botanical Interests Blog.