The answer to 'why is my sprinkler system dead trees' is that a malfunctioning sprinkler system can lead to over-watering or under-watering, which can stress and kill nearby trees. Common causes include broken sprinkler heads, leaks in the pipes, clogged valves, and programming issues that result in improper watering schedules.
Symptoms of a sprinkler system problem affecting trees include yellowing or wilting leaves, stunted growth, and eventual tree mortality. To troubleshoot, first inspect the sprinkler heads and pipes for any visible damage or leaks. Then check the programming on your sprinkler controller to ensure the system is running at the appropriate times and durations. If you're unable to resolve the issue, it's best to call a professional landscaper or sprinkler repair service to diagnose and fix the problem.