Too much iron affects the chlorophyll, making it darker. If your grass starts turning yellow and eventually appears burned, scorched, and brittle, chances are iron toxicity could be the main cause. Brown grass that appears burned or scorchedĪ healthy lawn should be lush and green. Here are signs that your grass has a high concentration of iron 1. Cold-season grass es like Tall fescue and Kentucky bluegrass prefer cooler climates such as the Pacific Northwest and Northeast.ĭifferentiating between grass with an iron deficiency and grass with a high iron concentration is a challenge.Augustine grass thrive in warmer climates like the South and Southwestern states. Warm-season grasses like Bermudagrass and St.There are about a dozen varieties of grass species for lawns, many of which contain a mixture of two or more varieties. Therefore, it’s best to stick to grass that suits your geographical location and climate. If you plant warm-season grass in a cooler climate, chances are your iron application method might backfire, and vice versa. Planting warm season grass in cool regions and vice versa Ensure the ground moisture is balanced level (neither too dry nor wet) to allow the grass to soak up the iron. Wet or dry soilĪpplying iron on wet soil can also cause burns in the grass. Ideally, you should aim at fertilizing it during spring when the ground temperatures are at 60 to 70 degrees Fahrenheit. Temperatures below 55☏ and above 80☏Īpplying iron supplements on the grass in extreme temperatures below 55 degrees Fahrenheit or above 80 degrees Fahrenheit causes burns on your lawn. Some fertilizer products claim that they don’t subject grass to burns, but you never know until you apply too much iron and see side effects.įactors that influence burns in the grass due to high iron concentration include: 1. Without the green-coloring matter, your grass can’t produce energy to facilitate photosynthesis. Lawns require supplements like iron sulfate, which has a high nutrient and mineral concentration that catalyzes chlorophyll synthesis. A high concentration of iron, together with factors like extreme temperatures, wet or dry soil, and grass type, will cause your lawn to burn. It is possible to apply too much iron on your lawn while eliminating moss or boosting the color of your lawn. How much iron should you apply on your lawn.Add micronutrients like zinc and molybdenum Apply lime to the soil to treat iron toxicity ![]() Brown grass that appears burned or scorched
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