Diseased Trees?

Asked September 8, 2019, 4:29 PM EDT

https://extension.umd.edu/learn/ask-gardening Dear Cooperative Extension, Several trees have died on my property located on Triadelphia Rd, Glenelg, MD. Please see attached photos. What was the cause of their demise? I would like to remove the trees and then plant some new trees, perhaps apple trees or nectarine trees. Would they be resistant? Best regards, Jeff

Howard County Maryland trees pest insects and mites

1 Response

Hi - It looks like your trees were ash trees that have succumbed to damage from a foreign invasive beetle, emerald ash borer. These insects are killing ash trees all over the east coast and the central USA, unfortunately. Here is more information about them. https://extension.umd.edu/hgic/topics/emerald-ash-borer-eab

Ash trees become very brittle when they die and can be hazardous to take down. We recommend working with a licensed tree professional to take them down safely.

Fruit trees like apples and nectarines are not susceptible to emerald ash borer. Tree fruits, however, are challenging to grow in Maryland because of other pest pressures and diseases. You will have to plan to spray your trees regularly if you want to grow clean fruits. Please refer to our information on tree fruits. https://extension.umd.edu/hgic/topics/tree-fruit

If you are looking for another type of ornamental tree, the Maryland Department of Natural Resources has a good basic list of recommendations and also offers a rebate coupon to use if you purchase from an approved nursery. Here is information about that program. http://dnr.maryland.gov/forests/Pages/MarylandersPlantTrees/Recommended-Tree-List.aspx