
Red maple seeds in late spring, roughly May into June, not fall — so it fills gutters and seeds flower beds during the same weeks people are laying mulch, which is why the seed complaint on this tree arrives at an odd time of year. Autumn leaf drop is heavy but fast and tidy, and the twigs are fine enough to mulch rather than haul.
Landscape cultivars run 40-60 ft tall with a 25-40 ft spread; the straight species goes considerably larger on a wet site, with 80-100+ years of potential life. Removal usually sits mid-bracket — a climbable one-day job for two people — unless it is a multi-stemmed hybrid leaning over a roof, which pushes it toward crane work.