Emerald Ash Borer information

http://nyis.info

PA DCNR - Forestry Archive, Bugwood.org

Ash Tree IdentificationKey Ash Tree Characteristics

Opposite Branch ArrangementsBuds, Leaves and Branches are

directly across from one another

Pinnately Compound LeavesLeaf made of leaflets arranged in a line with one terminal leaflet.

5-11 leaflets per leaf

Trees have anUpright, Oval Shape

Diamond Patterned BarkRidges and furrows form diamond shapes in older bark (green & white ash)

Single Samara FruitSeed surrounded by a dry, oar shaped wing

Stout Twigs support prominent Brown Buds

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Some lookalikes and their key differences:Norway Maple: Simple (not compound) lobed leaves, paired samaraBox Elder: Purplish twigs, lobed terminal leaflet, paired samaraElderberry: Shrub, purple berries, large, white flowersWalnut, Hickory, Mountain-Ash: Alternate branching

For more Emerald Ash Borer information and links go to http://nyis.info