After weeks of excessive heat with temperatures in the 90s and even into the 100s, the lawn has taken a beating. Usually grass will go into a dormancy period. Although we have had a couple days of rain, the grass is still quite brown and the question is whether it should be mowed or not. It has not been mowed for 3 weeks. Based on some information online, lawns should be kept long – anywhere from 3-4 inches long so the sun can not reach the roots. Ours is about 2-3 inches long so we will wait another week.