Tree and Shrub Pests  

There are many things to consider when keeping our arboretum (or your trees) healthy and vibrant.  And just as our arboretum is a diverse collection of trees, so too are the pests that call it home.  Below you can find links to some of the leading experts on tree health and some brief descriptions of the pests.  

 
Infamous Insects  

While all pests can cause issues for trees in one way or another, a few species have received a little more “press” recently.  Species like the Emerald Ash Borer and the Spotted Lanternfly have become more of a pressing and prevalent pest since they have been introduced to the area.  Below is a little more information about these new and frequently talked about invasive species.

Emerald Ash Borer

The Emerald Ash Borer is a small and slender insect with iridescent green color.  The larval stages of these species are very destructive, boring paths under the bark of ash trees, giving the species its common name.      

Emerald Ash Borer

Spotted Lanternfly

The spotted lanternfly is a pest species native to Asia and was recently introduced to Pennsylvania.  It is a leaf hopping species that can fly short distances, but its primary means of locomotion is hopping or jumping from plant to plant.  The species can stunt the growth or even kill trees by sucking the sap out of plants. 

Spotted Lanternfly

Other Pests To

Look Out For