To plant corn successfully, follow these key steps:
When to Plant
- Plant corn after the last average killing frost, when soil temperatures are consistently between 60°F and 90°F. Planting too early in cold soil can cause weak growth or seedling death
Soil Preparation
- Choose a location with full sun (at least 8-10 hours daily) and well-drained, loamy soil with a pH between 6.0 and 6.8.
- Till the soil 6 to 8 inches deep, avoiding working it when too wet to prevent clods.
- Improve soil fertility by mixing in aged compost or organic matter.
- A soil test is recommended to determine lime and fertilizer needs. If not tested, apply a balanced fertilizer like 10-10-10 before planting and sidedress with nitrogen fertilizer during the growing season
Planting
- Sow seeds about 1 inch deep.
- Space seeds 8 to 12 inches apart within rows, with rows 3 feet apart.
- Plant corn in blocks of short rows (at least 4 rows side-by-side) rather than one long row to ensure good wind pollination, which is vital for ear development
- For small gardens, 15 plants spaced 1 foot apart in a 3x5-foot bed is a good start
Watering and Care
- Corn requires about 1 inch of water per week, especially during pollination and ear filling.
- Water deeply to moisten soil to a 6-inch depth, preferably in early morning or evening.
- Keep the area weed-free with shallow cultivation or mulching to conserve moisture.
- Support stalks by mounding soil around the base to prevent wind damage
Harvesting
- Sweet corn is ready to harvest about 20 days after silk appearance.
- Harvest when silks are dry and brown, and kernels are plump and release a milky juice when punctured
By following these guidelines, you can grow healthy corn plants that produce good yields