When starting any project you always want to have a start to finish plan with communication to your team. Write it down on a napkin on your hand on anything, just write it down! This plan should include all individuals involved along with planning for future unknowns. The better you become at this process, the longer your projects last and potential future unknowns become lower to non existant. Sometimes...actually always, you can't play God and prevent all issues but you can do the best of your ability. In this case communication between an irrigation guy and a landscaper was low to non existant. The irrigation lines were ran and then a big palm was planted right on top of the line. It took roughly 10 years and the line broke. The line was re-plumbed around the palm bulb and sprinkler head pushed back. Not a big issue but double work doesn't need to be done with better planning. Plan well.