Search OSU Extension

Showing 1 - 10 of 18 results.

Rhododendrons and azaleas need a strong acidic soil

Check out yellow leaves on rhododendrons and azaleas.

Jun 4, 2010 | News Story

Trees and Shrubs for Erosion Control

A list of recommended trees and shrubs in Oregon, good for controlling erosion.

Jul 2018 | Collection

Are madrone trees mean?

Q: I have a small grove of Madrones behind my house. I have put a couple of annual beds under them but nothing seems to grow under them. I have looked all over the net to no avail on this issue. I did amend the ...

A: View answer | View all featured questions

Arborvitae root issues, should we dig it?

Q: We planted 17 emerald arborvitaes 3 weeks ago. We broke apart the rootball (at the suggestion of an employee at the retailer) and I've since learned that this is bad to do. We are watering regularly and have covered the ...

A: View answer | View all featured questions

Streamside planting zones

Describes the three planting zones around a stream.

Jul 2018 | Article

Use Caution When Irrigating Oaks and Madrones

Excessive summer irrigation of oak and madrone trees may promote fungal diseases such as the oak root fungus (aka armillaria root disease) and crown rot.

Jun 2018 | Article

Plant native Oregon shrubs now

Time to plant native Oregon shrubs

Jan 29, 2010 | News Story

Give rhododendrons and azaleas an annual check-up each spring

Spring is time to care for rhodies.

Peg Herring | Mar 25, 2005 | News Story

Growing berries, fruit trees, roses and native plants in Central Oregon

OSU Extension publications show how to grow several kinds of berries, fruit trees, roses and native plants in Central Oregon.

Jan 9, 2009 | News Story

Stressed trees show dieback

Browning or dieback is usually caused by weather-related stress, sometimes in combination with pests and diseases.

Mar 2018 | Article