Emeral Ash Borer Information:

Since 2002 the Emerald Ash Borer has been devastating ash populations across
the United States. This killer insect destroys all types of Ash and is
in Bucks and Montgomery counties now. For some Ash it is already
too late. You may have noticed Ash trees in your neighborhood
showing signs of decline or even death. Don't wait! Now is the time
to contact your I.S.A. Certified Arborist and discuss treatment
options. Adult Emerald Ash Borer are active now. Proactive
treatments can still protect your Ash this season but must be performed soon.

PA Department of Conservation & Natural Resources link to more information:   

http://www.dcnr.state.pa.us/forestry/insectsdisease/eab/