APPENDIX G: UNACCEPTABLE TREES
   RECOMMENDED UNACCEPTABLE TREES*
   * Certain species may not be recommended from time to time due to current biological threats or other recognized industry practices.
BOTANICAL NAME
COMMON NAME
   RECOMMENDED UNACCEPTABLE TREES*
   * Certain species may not be recommended from time to time due to current biological threats or other recognized industry practices.
BOTANICAL NAME
COMMON NAME
Acer negundo
Boxelder
Acer platanoides
Norway Maple
Acer saccharinum
Silver Maple
Ailanthus altissima
Tree of Heaven
Albizza sp.
Mimosa
Betula papyrifera
White Birch
Elaegnus angustifiolia
Russian Olive
Fraxinus Var.
Ash
Juglans sp.
Juniper
Malus sp.
Common apple
Morus sp.
Mulberry
Pinus nigra
Austrian Pine
Populus spp.
Poplars, Cottonwoods, Aspen
Prunus spp.
Blackthorn
Rhamnus frangula
Alder Buckthorn
Salix spp.
Willows
Ulmus
Elms (other than new hybrids)