Newly-seeded grass needs about 3 to 4 weeks to get established after germination before you mow it for the first time. The blades of grass are tender and easily damaged. Also consider limiting foot traffic and mower traffic, as this could compact the soil, especially if the soil is moist. When the new grass is about 3 inches high, it is safe to mow.
Every grass has an ideal mowing height which varies during the season. Lawns are also cut according to specific heights for different varieties of grass. Typically, Lawn Care Companies will cut your grass how you want. Keep in mind if you do request your yard be cut at a shorter height, mowing your lawn too short can lead to problems such as weed invasion, drought and damage from the heat.
It is better to do long deep watering than short frequent ones.
Typically a yard only needs an 1" of water per week. More during drought periods.
Avoid watering 11am – 3pm (the hottest part of the day). Ideally you should water your lawn 6am – 10am and also don’t water at night; this can lead to fungus and mildew.
If you are unable to water in the morning, 4pm – 7pm is generally the second best time.
This will depend on the type of grass you have. Your yard requires nitrogen and other nutrients in order to maintain healthy growth. Generally speaking, most lawns should be fertilized 4 times per year for a deep feeding. Your local lawn care company can help assess what fertilizer should be applied and when it is needed.
Depending on what the issues are that caused your yard to turn brown will determine the solution to fix the problem. Brown spots can be caused by animal waste, disease or fungus in the yard.
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A fertilized yard should be mowed weekly depending on how much you water and the types of weather. Spring & fall are the busiest times that the grass will grow like crazy with more rainfall.