Plant Profile: Zea mays

Sweet corn thrives in warm weather and should only be planted once the soil temperature reaches 60°F. As one of the taller crops in home gardens, it’s important to position it where it won’t overshadow other plants. Ensure it is planted in full sunlight and in rich, well-drained soil. To achieve a successful corn yield, keep the following guidelines in mind:

1. Since corn relies on wind for pollination, it’s best to plant seeds in multiple rows arranged in a square or in clusters with several plants in a circle. Typically, a minimum of 12 plants is required; avoid planting in a single long row.

2. Corn is a nutrient-demanding plant that requires plenty of nitrogen and consistent moisture. However, be sure to water the soil rather than the plants directly, as this can hinder pollination.

3. Corn roots are sensitive to disturbance, so when thinning, it’s advisable to cut away excess sprouts instead of pulling them out. The same approach should be taken with nearby weeds. Once the corn is well-established, apply mulch to suppress weeds rather than cultivating around the roots, which could cause damage.

4. Certain sweet corn varieties may be negatively impacted by cross-pollination from other types of corn, so it’s crucial to adhere strictly to the cultivar label instructions to prevent pollen contamination. 5. The timing of the harvest is critical for some sweet corn varieties, so be sure to follow the specific harvesting guidelines for the type you are growing. In contrast, hard corn can remain on the stalk until it dries, making harvest timing less of a concern for those varieties.