In Scripps Ranch the eucalyptus stand tall in long, peeling rows, and on a damp December morning the fog hangs in their crowns so the neighborhood smells faintly of menthol and rain. Those trees are part of the place's identity, and they are also heavy-limbed and quick-growing, the kind that need a steady hand overhead. Benitez Tree Service does exactly that kind of work in San Diego, trimming and pruning so big canopies stay balanced above roofs, driveways and backyard fences. Good pruning is half science and half patience: reading where a tree wants to grow, then shaping it so wind passes through instead of tearing at it. When the fog burns off by midmorning and sunlight drops through a freshly opened crown, the difference shows on the ground as much as in the branches.