Lawn: Mow high
-- Mow high this time of year. Longer grass will shade the soil, conserving moisture and discouraging weeds. Mow 3 inches high for cool-season grasses such as Kentucky bluegrass and 2 inches for most warm-season grasses, such as Bermudagrass and zoysia. But don't let your lawn grow too high before you mow - the rule of thumb is never to remove more than one-third of the grass blade at a time, or you'll stress your grass.