
Pin oak drops small, round, shallow-capped acorns about a half inch across, and being a red oak it runs a two-year cycle, so mast years hit hard and then go quiet. The distinguishing mess is marcescence — dead brown leaves stay attached through winter on lower limbs and juvenile growth, then release in late winter and early spring, which means you rake this tree twice a year.
Reaches 60-70 ft tall by 40-50 ft wide and grows fast for an oak, with lifespans commonly cited near 100-120 years — short for an oak, and shorter still on the alkaline sites where it never really thrives here. Removal is mid-to-high bracket: wide spread and dense low branching mean many small rigging picks, but the trunk is usually straight and the wood holds a climber, so it is not a crane job by default.