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Growing Tree Fruits Successfully

Soil, site, irrigation, selection, pruning/thinning, and integrated pest management.

Ross Penhallegon | Jul 2013 | Presentation

My pears have rust, what can I do?

Q: Last year crop was a total failure due to this. This year I have gently removed close to 6 small fruit starts. I just found some leaves on the pear with these spores. I have been treating the soil and the tree with...

A: View answer | View all featured questions

Why Does Your Tree Look Sick?

Most “sick tree” problems can be traced back to underlying stresses that have reduced the tree's vigor, making it more vulnerable to diseases or insect pests.

Jun 2018 | Article

How the Rogue Valley became famous for pears

The Rogue Valley growers were pioneers in pear production, growing over 24 varieties and setting quality standards in packing pears. The Rogue Valley was the first and largest red pear growing region in the Pacific Northwest in...

Jul 2007 | Article

How to collect a plant specimen for disease diagnosis

A guide for how to collect and where to get a sample analyzed for plant diseases.

Melodie Putnam, Carol Savonen | Jul 2014 | Article

Why are my trees dying?

Trees all over Oregon are displaying signs of poor health. People are quick to blame insects, but insects are rarely the underlying cause of the problem. Drought and other stressors can make trees vulnerable to pests and disease.

John Punches | Sep 2019 | Article

Wireworm

Information about the wireworm, or click beetle larva.

Jul 2018 | Article

Grapevine Trunk Diseases in Oregon

A summary of the main trunk diseases causing issues in Oregon and management methods.

Melodie Putnam | Mar 2019 | Article

What are those 'worms' in my firewood?

You may have encountered white, segmented “worms” or grubs when chopping firewood and wondered what they were. Common questions include, did they kill my tree? And are they a danger to other trees? The quick answers are no, and no.

Jun 2018 | Article