For me, 9:30pm is the best

来源: 小心翼翼的小地主 于 2012-05-04 18:08:29 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (195 bytes)
回答: 弱弱地问： sprinkler setting 由 美西游子 于 2012-05-04 16:53:25

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.

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