At Mustila the species grows as sturdy small trees on Ketunmäki (Fox Hill) and here and there throughout the Arboretum. They are easy to distinguish from other trees by their large healthy leaves and sturdy branches, which mark it out from more familiar hawthorns. The thorns are about an inch (2.5 cm) long, though sometimes they are totally absent. Autumn colour is a glowing orange-red.