Fog moves through San Anselmo's canopy before it ever touches the ground — you can watch it comb through the redwoods at seven in the morning. The Small World Tree Company works up in that layer, trimming and shaping the trees and tall shrubs that give this Marin town its green ceiling. Careful cuts open light to the gardens below; a lifted crown lets a lawn breathe again after years of deep shade. Every property here negotiates with its trees — oaks, bays, the occasional towering redwood — and good trimming keeps the negotiation friendly. The whole town wears its canopy well, and this crew spends its days keeping it that way.