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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

Turfgrasses and Lawn Care in Eastern Oregon

Today, turfgrass is the single largest irrigated crop in the United States and covers three times the land area of any other cultivated crop. An estimated 40.5 million acres of grasses are planted in residential, commercial and...

Richard Smiley | Jan 2018 | Article

Trees and Shrubs for Erosion Control

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

Jul 2018 | Collection

Wireworm: Biology and Nonchemical Management in Potatoes in the Pacific Northwest

Wireworms are among the most destructive of soil insect pests. This publication explains the wireworm life cycle and describes a program for monitoring and risk assessment. Nonchemical management methods are suggested, including crop ...

Silvia I. Rondon, Nick Andrews | Dec 2008 | OSU Extension Catalog

Using Entomopathogenic Nematodes for Crop Insect Pest Control

Topics covered include the life cycle of entomopathogenic nematodes; how they control insect pests; obtaining, using, and storing; soil conditions necessary; application preparation, equipment, and rates; pesticide safety; and websites that provide more specific information.

May 2012 | OSU Extension Catalog

The Colorado Potato Beetle in the Columbia Basin

Oregon State University Crop and Soil Science Masters student Pahoua Yang focuses her research project on Colorado potato beetle, Leptinotarsa decemlineata. Her project is to determine baseline information for several commercial ...

Silvia I. Rondon | Oct 2019 | OSU Extension Catalog

Symphylans have invaded my garden, how can I get rid of them?

Q: How do i get rid of symphylans? I have turned the dirt numerous times and treated with Bifenthrin as was directed by a soil expert at a local greenhouse ( 3 days ago) and they're still alive and well. Help!!! I am ...

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

Foxtail Control in Pastures and Hayground

Foxtail is a problematic grass in pastures and hayground, and infestations need immediate attention. Small infestations of foxtail should be spot treated, while larger infestations require whole pasture renovation. This informational ...

Shelby Filley | Mar 2015 | Article