The answer to 'irrigation installation has weeds' is that weeds can commonly grow in and around irrigation systems due to excess moisture, exposed soil, and lack of proper maintenance. Symptoms include weeds sprouting up in the irrigation lines, around sprinkler heads, and in the landscaping. Solutions include adjusting irrigation schedules, adding mulch, and regularly weeding and maintaining the irrigation system.
If the weed problem persists or you're unsure of the cause, it's best to call in a professional landscaper or irrigation specialist. They can diagnose the underlying issue and provide the right long-term solution to prevent future weed growth.