- Weed Problems in lawn
- Moss Growth in lawn
- Yellowing of the lawn
- Slow response to fertilizer
Why lime? Turf grass prefers a slightly alkaline soil. Limestone is a safe and efficient method to reduce acidity. Soil pH below 6.5 is acidic and would benefit from lime. Too much water (heavy rainfall or excessive irrigation) can cause an increase in soil pH.
Limestone supplies calcium and magnesium to grass plants and its ability to lower soil pH helps turf in other vital nutrients. When soil is too acidic, the turf cannot efficiently absorb and process nitrogen, phosphorus, potassium, sulfur, calcium, magnesium and molybdenum. Without these nutrients, grass becomes more vulnerable to drought, foot traffic and high temperatures. Stressed, nutrient-starved turf yellows and thins, allowing weeds to invade.
Lime helps control thatch, improves drainage and suppresses weeds. The beneficial soil microorganisms needed to break down grass clippings do not thrive in an acidic environment. This allows thatch to build up. Thatch prevents water, nutrients and air to reach the plant roots. Adding lime to lawns encourages the decomposition of clippings. This natural composting action makes soil more porous. Liming lawns also inhibits the growth of moss, an acid loving weed.
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