To determine the health of your Ash trees, consult Assess Ash Trees for Emerald Ash Borer.
Click here To view the STC criteria that will help you decide whether to remove an ash tree or treat it.
Click here To consult the Managing Emerald Ash Borer Decision Guide.
Click here For insecticide treatment options to protect ash trees from the Emerald Ash Borer.
Click here For FAQs regarding potential side effects of EAB insecticides.
Click here To view the 2016 amendment to the Princeton Trees and Shrubs ordinance that exempts ash trees from some requirements of tree removal permits.
Click here To watch the STC's June 23, 2016, public information session on the Emerald Ash Borer, videotaped by and courtesy of Princeton TV.
For up-to-date EAB information, consult the Emerald Ash Borer Information Network. For New Jersey, consult the NJ Department of Agriculture's EAB website.
For more information, the following websites are helpful:
How to Help
You can adopt an ash tree or contribute to the STC Fund to Save Ash Trees.
Click here for information about the Princeton Emerald Ash Borer "Adopt an Ash Tree" program and to download the participation form. (The form is also available at Princeton Public Library and at the office of the Municipal Clerk, 400 Witherspoon Street.)
Click here to download the STC Contribution Form.
The Spotted Lanternfly:
ALERT: Now seen in Princeton, as of summer 2019, on three Ailanthus trees (Tree of Heaven). Residents are asked to report sightings by calling the New Jersey Spotted Lanternfly Hotline, 1-833-223-2840 (BADBUGO), and leaving a message with their contact information and details of the sightings. Residents can also email SLFfirstname.lastname@example.org .
The Spotted Lantern fly, Lycorma delicatula, is a pest new to the United States. This invasive plant hopper, initially discovered in Berks County,Pennsylvania, in 2014, is native to Southeast Asia and poses a threat to forests, ornamental trees, orchards, vegetables, grapes, hops, and other agricultural commodities. Since its initial discovery in Pennsylvania, it has spread to infest portions of 13 counties in that state. Recently, it has been discovered in New Jersey in Warren, Hunterdon, and Mercer Counties. The New Jersey Department of Agriculture has recently enacted a state quarantine in these counties to restrict the movement of any living life stage of this insect to uninfested areas of the state. All life stages of this insect, from nymphs to adults, can fly, hop, and drop right into or onto vehicles; thus, vehicles and equipment can easily and quickly help it spread.
More information can be found on the New Jersey Department of Agriculture website