Prohibited Trees - updated in 2023
Ailanthus altissima, tree of heaven
Albizia julibrissin, mimosa
Acer campestre, hedge maple
Acer ginnala, Amur maple
Acer negundo, box elder
Acer platanoides, Norway maple
Acer pseudoplatanus, sycamore maple
Acer saccharinum, silver maple
Alnus glutinosa, European black alder
Betula pendula, European white birch
Elaeagnus angustifolia, Russian olive
Elaeagnus umbellata, autumn olive
Frangula alnus, glossy buckthorn
Fraxinus spp., ashes
Juglans nigra, black walnut
Koelreuteria paniculata, golden rain tree
Morus alba, white mulberry
Pyrus calleryana, Callery pear
Paulownia tomentosa, princess tree
Phellodendron amurense, Amur corktree
Populus alba, white poplar
Populus deltoides, cottonwood
Populus nigra, Lombardy poplar
Pterocarya spp., wingnuts
Rhamnus cathartica, common buckthorn
Robinia pseudoacacia, black locust
Salix spp., willows
Sorbus aucuparia, European mountain ash
Styphnolobium japonicum, pagoda tree
Ulmus pumila, Siberian elm
Zelkova serrata, zelkova tree