unknown on Jun 21, 2023

Originally reported as Emerald Ash Borer (Agrilus planipennis)

Submitter does not have a specimen
EDRR Status: Ongoing monitoring

Description of specimen

Oregon ash with crown dieback near an ash that appears to have died recently and has lost all foliage. May be a single forked tree, but the creek was too high to tell. The living tree(/fork) with dieback appears to have epicormic branching at the base of its trunk (see pic). The dead tree's(/fork's) bark is split in several spots vertically along the trunk and has some exit holes that are roughly D-shaped (see pic).

Commentary

On 8/10 I did one more follow-up on this tree with Vance and did some spot-checking the day before on other ash in the area. No EAB was detected. The d-shaped hole in the picture is actually quite circular and was from a non-EAB woodborer. Lots of flooding all along this Fanno Creek greenway has resulted in many ash being drowned out.

Christine Buhl
Aug. 10, 2023, 12:14 p.m.

Vance and I met at the tree in question and it is not EAB, looks to be stress from flooding followed by other woodborers.

Christine Buhl
Aug. 30, 2023, 1:40 a.m.