For me, 9:30pm is the best

来源: 于 2012-05-04 18:08:29 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

Kids can play in dry grass while 9:30pm is not so late that watering bothers your sleep. Also, it's more efficient to water grass during night than in dayttime when sun can evaporate some water.