Invasives
Amur Cork Tree (Phellodendron amurense)
Amur cork tree is a small to medium-sized tree growing 35 to 50 feet in height. It has prominently ridged bark, which is soft and corky to the touch. Just beneath the ridged outer bark, the tree has a bright yellow inner bark. Amur cork tree has compound leaves with…
Callery Pear (Pyrus calleryana Dcne.)
Callery pear is an upright, pyramidal tree that grows 20–30 ft. tall, with a 20–30 ft. wide canopy. Young trees are relatively slender and may be thorny. Its alternate leaves are oval, up to 3 inches long and 1 1/2 to 3 inches wide, with small, round-toothed margins; long petioles…
European Alder (Alnus glutinosa (L.) Gaertn.)
European alder, also known as common alder or black alder is a tree that grows 40-50 ft in height. Its branches are alternate. Its leaves are simple, oval, 2 to 4 inches long, 2 to 3 inches wide, with a rounded or slightly notched tip, have a doubly serrate margin,…
European Rusty Willow and Gray Willow (Salix atrocinerea (L.) Gaertn.) and Gray Willow (S.cinerea (L.) Gaertn.)
European rusty willow is a tall shrub or small tree that grows up to 50 feet tall; it has smooth gray-green bark with a waxy texture and raised ridges in the wood. Gray willow is a multi-stemmed shrub that may grow up to 20 feet tall. The two willows are…
Tree-of-Heaven (Ailanthus altissima)
Overview: Fast growing deciduous tree. Leaves, roots and bark have allelopathic chemicals that prevent the grow/establishment of other plant species. Primary host of Spotted Lanternfly, an invasive pest which has numerous impacts on people and wild/agricultural plants. Size: Can grow to ~80 ft. Sprouts can grow 10 to 14 feet…