Tree Care

Lynn Ketchum

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OSU Extension Catalog

How do I know if my tree is healthy?

Are you worried about a tree on your property? Oregon State University Extension Service Foresters help you learn about individual tree needs, how to detect and describe symptoms of poor tree health, and to decide whether you need to take further action.

By Dave Shaw, Nicole Strong

Online Resource

NC-140 Regional Rootstock Research Project

This project seeks to enhance economically and environmentally sustainable practices in temperate fruit production by focusing on rootstocks.


Life on the Dry Side Forestry Newsletter

Serving land managers and owners east of the Cascades.

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Ask an Expert is a way for you to get answers from the Oregon State University Extension Service. We have experts in family and health, community development, food and agriculture, coastal issues, forestry, programs for young people, and gardening.

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My monkey puzzle tree has me puzzled, any ideas?

I have a Monkey Puzzle tree that's 20+ ft. and should be at least 40 years old. The lower limbs have been drying out and turning brown. Nothing unusual this year as in years past, have not disturbed it.