
Buckeye wood is soft, low-density and weak for its diameter, but the tree is short and broad enough that it never develops the leverage that snaps big-limbed maples in an ice storm. What you actually get is scattered small-limb breakage and, on open-grown yard trees, splits at the low codominant forks the species tends to form.
Dormant season and keep cuts light — it is a small, low-branching tree and hard reduction just buys weak watersprout regrowth. The species-specific work isn't pruning at all: leaf blotch (Guignardia aesculi) overwinters in the fallen leaves, so raking and hauling the litter every autumn buys more clean canopy next July than any cut will.