The big oak out front looks fine. Totally fine. Right until July, when a storm muscles through and a limb the size of your leg punches a hole in the roof. Suddenly, the trim you put off twice is a five-figure repair. Trees don’t beg for much. A little attention, though, they do ask for. That’s the whole case for tree trimming. When done on a schedule, it keeps your trees strong, safe, and, frankly,…