ETHYLENE 



SOFTWOODS 



Tolerant 



Intermediate 



Sensitive 



Arborvitae (Thuja sp.) 







• 



ETHYLENE 



HARDWOODS 



Tolerant 



Intermediate 



Sensitive 



Japanese holly (Ilex crenata) 







• 



2-4-D 









SOFTWOODS 



Tolerant 



Intermediate 



Sensitive 



Colorado spruce (Picea pungens) 





• 





Yew (Taxus sp.) 





• 





Hemlock (Tsuga sp.) 





• 





2-4-D 



HARDWOODS 



Tolerant 



Intermediate 



Sensitive 



Boxelder (Acer negundo) 







• 



Norway maple (Acer platanoides) 







• 



Tree of heaven (Ailanthus altissima) 







• 



Birch (Betula sp.) 







• 



Hickory (Carya sp.) 







• 



American yellowwood (Cladrastis lutea) 







• 



Dogwood (Cornus sp.) 







• 



Ash (Fraxinus sp.) 



• 







Sweetgum (Liquidambar styraciflua) 





• 





Apple (Malus sp.) 







• 



Mulberry (Morus sp.) 





• 





London planetree (Platanus acerifolia) 







• 



Pin oak (Quercus palustris) 





• 





Red oak (Quercus rubra) 





• 





Black oak (Quercus velutina) 







• 



Linden (Tilia sp.) 







• 



CHLORINE 



SOFTWOODS 



Tolerant 



Intermediate 



Sensitive 



Jack pine (Pinus banksiana) 





• 





Short leaf pine (Pinus echinata) 





• 





Eastern white pine (Pinus strobus) 







• 



Loblolly pine (Pinus taeda) 





• 





Yew (Taxus sp.) 



• 







Hemlock (Tsuga sp.) 



• 







10 



