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Grapevine trunk diseases in Oregon

Many different organisms can lead to grapevine trunk disease. But the root cause may be a combination of stressors.

Melodie Putnam | Mar 2019 | Article Peer reviewed (Gray level)

Managing blueberry viruses in the Pacific Northwest

While blueberries grow well in the Pacific Northwest, five major viruses afflict plants in this region. Learn what you need to know to prevent and manage viral disease in your blueberry plants. The most important step? Use certified virus-tested planting stock.

Robert R. Martin | Mar 2015 | Article

How to prevent gray mold in hemp

Gray mold outbreaks on hemp caused the fungus Botrytis cinerea can spread easily and quickly kill plants. Here's how hemp growers can create conditions that will keep gray mold at bay.

Cynthia M. Ocamb | Sep 2022 | Article

Details matter when evaluating plant problems

When the cause of a plant ailment isn't obvious, a bit of detective work is in order. That involves many small observations that together create a web of information that leads to the identity of the ailment.

Nicole Sanchez | Apr 2019 | Article

Wood chips for mulch?

Q: I have an old pile of wood chips from a pruned willow tree and I wondered if I could rototill them into my garden soil to add mulch?

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Is ink bad for my vegetables?

Q: Going to start shredding various types of paper--no cardboard--and wondered if the various toners/inks would cause problems with the plants or if the plant would absorb the chemicals and I would end up eating them from the vegetables produced.

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Starting a lawn from scratch?

Q: We are finally moving into our new home. Due to construction issues (lack of water and vehicle damage), most of the grass has died back and there are areas of just dirt. Also, we have dogs. Is there any variety of ...

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Should I leave my fig leaves on the ground?

Q: I have a big fig tree in my backyard. I have always been removing all the fallen leaves this time of the year as I was told that any dead leaves could give rise to increase in insects and plant diseases. I wonder ...

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Monitoring diseases in the field

Diseases can reduce the yield and nutritional quality of crops. Vectors are organisms that transmit pathogens that cause diseases and can also threaten crops. Some important vectors of plant pathogens in the Pacific Northwest ...

Silvia I. Rondon, Mary Corp, Stephen M. Van Vleet, Stuart Reitz, Pamela Hutchinson | Jul 2015 | Video Peer reviewed (Gray level)

Asparagus wilt?

Q: We have had a wonderful patch of Jersey Giant asparagus for the past twenty five years. This year, we have something "infecting" a few of the clumps of our asparagus and we can't identify it. It appears to be some kind of wilt or virus?

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