Q: I have a beautiful green ash tree in my front yard and hope to keep it protected from the ash borer as long as possible, but today I noticed a lot of leaves have fallen off. There are little dark ...

An ash tree in Forest Grove, Ore. shows signs of emerald ash borer damage. The invasive beetle was first discovered in the city in June 2022, prompting a large state-led response to slow its spread.

A computerized tree inventory lets the city forester pinpoint the location of every ash in city parks and roadsides, find out the trunk size and health and determine the last time his crews trimmed ...

There’s a lot to love about mountain ash, a delightful native tree that fits easily into urban and suburban landscapes. It can be grown as a small single-trunk tree or with multiple trunks, giving it ...

Gardening season is in full swing and there are lots of questions out there. Get answers from Ask an Expert, an online question-and-answer tool from Oregon State University’s Extension Service. OSU ...

Self-sown plants can be very resilient and are a bonus for any garden. I’ve often thought this and was delighted to see the results of a research trial on Ash dieback disease. The study was reported ...

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