Leaves are opposite, pinnately compound, 8-15" long with 5-9 leaflets (usually 7). Leaflet apex often with remote serrations. Slightly grooved petioles and U-shaped leaf scars. Bark deeply furrowed into diamond pattern.
'Rosehill' is a seedless cultivar that is very tolerant of poor soil conditions, including alkaline. Subject to storm damage, so plant in areas that shelter the tree from strong winds. Emerald Ash Borer is severely affecting all species of this genus. Damage can be prevented with the appropriate pesticide, but the treatment cost will eventually exceed replacement cost.
