Signs and Symptoms

Emerald ash borer or EAB, is an invasive insect that has already killed tens of millions of native ash trees in the US and threatens millions more. Help slow the spread of EAB by checking your ash trees for these common signs and symptoms of infestation: overall foliage thinning and dead branches; on the trunk look for woodpecker damage, bark splitting and D-shaped exit holes!

Educate to detect! Scan the QR code to learn more about emerald ash borer and other regional threats, then spread the word to help protect our plant resources!

Early Detection Is Key
Despite their flashy metallic color these beetles are difficult to spot and cause significant damage by the time symptoms become apparent. Emerald ash borer larvae feed beneath the bark of an ash tree, cutting off water transport to the rest of the tree and killing it.

In as little as two years from when symptoms are first observed most of the branches can die. However, when infestations are detected early damage from EAB can be slowed down saving more of our ash trees.

Agriuls planipennis

Sorry, but we don't have a picture of this historical marker yet. If you have a picture, please share it with us. It's simple to do. 1) Become a member. 2) Adopt this historical marker listing. 3) Upload the picture.

Show me all markers in:  Silver Spring, MD  |  Montgomery County  |  20902  |  Maryland  |  United States of America

Welcome to Ovid Hazen Wells Carousel at Wheaton Regional Park
Bioretention Gardens
Emerald Ash Borer
Shorefield
Regional Parks
A Pond with a Purpose
The Bridge to Understanding
Suggestions for Walking the Labyrinth
During the Summer and Fall in 2002...
Gude Garden

• GPX
• KML
• LOC

Have you seen this marker? If so, check in and tell us about it.