Hello, it’s Chester with Big Lakes Lawn Care.
The question is, when do I start up my sprinkler system in the spring?
The answer is, you start up your sprinkler system in the spring when the nighttime temperatures are staying above freezing.
Generally in southeast Michigan, that’s late April, early May.
Be careful not to start up your sprinkler system too early, because if you do, you run the risk of having an overnight freeze that could damage the system. So again, late April, early May.