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The Invasive and Highly Destructive Emerald Ash Borer has arrived in Ridgewood

the staff of the Ridgewood blog

Ridgewood NJ, Heather A. Mailander the Village Manager sent out and email yesterday defining the destructive nature of the Emerald Ash Bore . The Emerald Ash Borer (EAB) is a small (1/2 inch), invasive insect currently destroying Ash trees in many regions of North America. It was first discovered in Michigan 20 years ago and has killed tens of millions of Ash trees throughout the midwest. EAB is working its way up the East Coast, and is now very active in Ridgewood. EAB kills 100% of untreated ash trees.


There are approximately 650 Ash trees on Village property. To save the best Village-owned Ash tree specimens from the devastating impact of EAB, the Village has treated 173 of the healthiest Village-owned Ash trees with a systemic insecticide. The treatment is injected into the trunk of the tree and does not escape into the air or soil. This process will be repeated every few years until the wave of EAB passes.  The remaining Village-owned Ash trees will be removed, and work has already begun on the most afflicted trees.

Ash trees were commonly planted in the past, due to their hardy and fast-growing nature. As such, some neighborhoods will lose a significant number of trees. These neighborhoods will be considered for new tree plantings, over several years, in order to restore their character.


In addition to the 650 Village-owned Ash trees, there are many more on private property. All Ash trees located on private property are the responsibility of the homeowner. Below you will find some information helpful in identifying Ash trees. If you think you may have an Ash tree on your property, you should immediately schedule a consultation with a company that has a Licensed Tree Expert (LTE). A LTE can advise you on whether your tree is suitable for preventative treatment or if removal is necessary. You should not hesitate to make arrangements, because infected Ash trees can succumb in a short time, and dead Ash trees can quickly become very brittle and drop limbs that shatter.


5 thoughts on “The Invasive and Highly Destructive Emerald Ash Borer has arrived in Ridgewood

  1. How much is this going. To coast us.

  2. There goes the rest of remaining high trees in RW. We are returning to the tree level of the 50s. Crown has gone down significantly the last 3-4 years and this ash borer is the fatal push. Trees have always been one of the most appealing features for RW. Somehow even nature is pushing this once nice suburb towards urbanization.

  3. Q. When is the best time to plant a tree?
    A. Yesterday
    Q. When is the next best time to plant a tree?
    A. Today

    In other words, plant trees for the future.

  4. Destroying our town. Looks an awful lot like Paul Aronsohn

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