
Sugar maple samaras ripen and drop in fall, September into October, so the helicopters and the leaves come down in one clean-up season instead of two — unlike red maple, which drops seed in spring. The leaves are large and slow to break down and will mat and smother turf if left, and mature trees over a drive shed enough fine deadwood each spring to justify a raking.
Roughly 60-75 ft tall and 40-50 ft wide in the open, easily past 100 years in a woodlot and often 200+, though street-side in salted compacted soil many do not reach 60. At full size it is a large-tree removal — over a house or drive it means a crane or heavy rigging, near the top of the residential bracket, and the dense hard wood makes it slow to cut and process.