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Flowers, Shrubs, and Trees

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Emerald Ash Borer resources

Learn how to identify the emerald ash borer beetle and ash trees, what you can do and ways Oregonians are planning for and preventing the spread of this destructive insect.

Aug 2022 | Collection

How can I support the endangered Monarch butterfly?

Q: I recently read in the news that the Monarch Butterfly was added to the endangered species list. What can I plant in my garden to help the butterfly? I read that milkweed plants are their natural habitat. Yesterday I ...

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Emerald Ash Borer look-alikes

There are many bright metallic-green insects, but the emerald ash borer beetle is only a half-inch long and strictly associated with ash trees. Use the chart to help determine if EAB is present on your property.

Jul 2022 | Online resource

Forest Facts: Emerald Ash Borer

The Emerald Ash Borer (EAB), or Agrilus planipennis Fairmaire, is a highly destructive invasive forest pest that has killed over 100 million ash trees in the eastern U.S. since its first detection in 2002. Learn more about its biology, detection, treatment and proactive preparations. Oregon ash is a key part of riparian forests and wetlands west of the Cascades.

Jul 2022 | Online resource

Get ready, get set for summer weather with these tips from OSU Extension

Take a lesson from the 2021 historic heat dome and be prepared to help plants through hot and dry weather as the season progresses.

Jun 24, 2022 | News story

Is it too late to prune?

Q: I have a rose tree and totally missed pruning time this year. It is already flowering but the plant is very leggy (and also has black spot that we are treating). At this point should I just wait to do a light prune...

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Is bark mulch a fire hazard?

Q: I want to use mulch in my backyard around my flowers and trees, lots of trees. Fire experts want me to clear around my plants and down to the dirt!! I want to conserve water and I know I need mulch to do that since I cannot afford gravel. Besides, I do not like gravel. HELP!!!

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Shrubs to Know in Pacific Northwest Forests

This full-color, simple-to-use field guide makes shrub identification easy and fun. It features complete descriptions of the most common shrubs that grow in and around Pacific Northwest forests —from southern British Columbia to ...

May 2022 | OSU Extension Catalog Peer reviewed (Orange level)

Is this the end for my venerable daphne?

Q: My 20 year old daphne’s flowers were smallish and lacked fragrance. Now the leaves have turned yellow and are falling. Can I save it?

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Is there hope for my snow-damaged tree?

Q: The recent, heavy snow combined with rain pulled over an ornamental plum I’ve had for 20 years. Unfortunately, it drew the base partly out of the ground, though no roots are exposed. Can I right it and fix it with cables? Do I need an arborist? Or is it just toast?

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