Good mowing is one key to a healthy lawn. The recommended cutting height is 3 1/2" (4“ with large mowers) until around October tenth. On push mowers this may be the highest setting. Tall mowing has numerous advantages:
++ Better disease resistance. ++ Much better shade tolerance.
++ Reduced re-growth of weeds. ++ Deeper roots for better drought tolerance.
++ Shorter mowing results in shorter roots and it takes 60 days of good mowing to again grow deeper roots.
Good watering is the other key to a nice lawn. Your lawn needs one to two inches of water per week depending on rainfall, temperature, wind conditions, soil type and angle of exposure to the sun. As a very general rule, you will want to water three times per week for 30 to 45 minutes per station. Actual output will depend on head type and water pressure. Output can be measured by placing straight sided containers at several locations on the lawn. Watch for darker spots, gray-green or browning areas, wilting grass which lays flat when walked on and an oasis around sprinkler heads and downspouts. These all indicate under-watering. If only a few areas show stress, increase the watering time on that zone or zones. If the whole lawn shows stress either extend the time for all zones or add another watering per week. When using a hose-end sprinkler remember that watering is just like painting; missed areas and light areas will show up later. Good watering is not just cosmetic. Advantages include: