How to Grow Corn in your own garden

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How to Grow Corn in your own garden

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Few vegetables epitomise a summer vegetable garden like sweetcorn (Zea mays). Its rustling stalks shoot up as the weather warms, each producing an average of one to two golden, sugar-sweet ears by late Summer. Corn is somewhat fussy about its growing conditions and care, but the taste of a homegrown ear fresh from the husk makes it well worth the effort.


Step One

Corn Varieties - Corn cultivars are classified by their color, sweetness level and days to maturity. Generally, sweeter corn varieties are less stress-resistant than standard corn, so gardeners in less moderate climates should choose standard varieties such as Seneca (Zea mays "Seneca") or Golden Cross Bantam (Zea mays "Golden Cross Bantam"). Early corn varieties such as Seneca and Silver Sensation (Zea mays "Silver Sensation") are ready for harvest in 70 to 74 days, while midseason and late cultivars such as Silver King (Zea mays "Silver King") and Silver Queen (Zea mays "Silver Queen") can take 80 to more than 90 days to reach maturity. Because corn is a warm-season crop with a long growing period, gardeners in cooler climates with a shorter growing season should choose early varieties to ensure a good yield.


Step Two

Growing Conditions - Corn needs full sun, fertile soil and good drainage to perform well. Choose a site at the north side of the garden with eight to 10 hours of direct sun each day. Avoid clay or sandy soil because both present challenges for corn. Prepare the site by amending the top 12 to 15 inches of soil with a 2- to 4-inch layer of rotted steer manure or compost, preferably in the autumn before planting so it has time to mellow. Till the soil well, removing any sticks, rocks or other large pieces of debris that might interfere with the corn's roots. Also, weed the site thoroughly a day or two before sowing to eliminate any competitive plant growth. Space corn 4 to 6 inches apart at planting, then thin the plants to 8 to 12 inches once they reach 3 to 4 inches high.


Step Three

Water Requirements - Soil moisture plays a key role in growing corn, especially during pollination and when kernels are forming. Insufficient water causes misshapen or missing kernels and small or undeveloped ears. At least 1 inch of water every five to seven days is required, with additional water needed during especially hot, dry or windy weather. Water in the morning so stalks have time to dry before nightfall, and water at the base of the stalks to minimize splashing onto the leaves. Run water until the soil is very moist in the top 6 to 12 inches, the equivalent of 1 inch of water, and let the surface dry out before watering again. To help conserve soil moisture, spread a 3- to 5-inch layer of mulch between the plants.


Step Four

Fertilizer Needs - Corn needs ample nutrients during the growing season. Side-dress corn plants with 10-10-10 analysis fertilizer once they reach 12 to 18 inches high. Make a 3-inch-deep furrow in the soil parallel to the corn row and roughly 3 inches from the base of the stalks. Sprinkle fertilizer into the furrow at a rate of 3 tablespoons per 10-foot row. Cover the fertilizer with soil and water deeply, wetting the soil to a 12-inch depth. Side-dress again once or twice more during the growing season, especially if the corn shows signs of phosphorus or nitrogen deficiency, such as purple-tinted or pale foliage.


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