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Rhododendrons and azaleas need a strong acidic soil

Check out yellow leaves on rhododendrons and azaleas.

Jun 4, 2010 | News Story

The Phosphorus Dilemma

Explains water-quality issues related to excess phosphorus in surface waters. Provides specific ways for homeowners, commercial property managers, irrigated row crop growers, dryland farmers, ranchers, and confined animal feeding operators to reduce phosphorus loss to surface waters.

Clinton Shock | Oct 2007 | OSU Extension Catalog

Groundwater and Nitrogen Management in Willamette Valley Mint Production

Describes impacts of nitrogen overfertilization and uneven irrigation on groundwater in Willamette Valley, Oregon. Recommends that mint crop growers use stem testing to gauge nitrogen needs more closely and advises growers on how to improve irrigation system efficiency.

John Selker | Apr 2004 | OSU Extension Catalog

Food Safety for Fresh Market Growers: Manure Management and Irrigation Water

Many farms will be required to go through some sort of Good Agricultural Practices (GAP) certification process in order to satisfy buyer demands or because they will be required to under the new Food Safety Modernization Act. ...

Nick Andrews | Jun 2013 | Article

Trees and Shrubs for Erosion Control

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

Jul 2018 | Collection

Runner beans are beautiful and edible

If you have trouble getting other green beans to germinate in early May because of cold soil, try planting a patch of scarlet runner beans first before your pole and bush green beans.

Feb 19, 2003 | News Story

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

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