Christmas trees planted in unirrigated sites depend on the weather for survival. A research trial set out to find factors that would help seedlings survive during drought years. Results were mixed.
Blueberries grow well in the Pacific Northwest. To get the most out of your bushes, it helps to understand the form and function of each part of the plant.
This publication gives a brief introduction to hazelnuts, which are sometimes called filberts. It provides an overview of hazelnut history, growth and production, geographic distribution, and hazelnut industry organizations.
This publication includes tables that summarize characteristics of the main hazelnut varieties produced in the United States, lists varieties' susceptibility to eastern filbert blight, and shows varieties' compatibility with each other for pollination.
Jeff L. Olsen, Shawn Mehlenbacher, Rebecca L. McCluskey, David Smith |
Mar 2023 |
Extension Catalog publicationPeer reviewed (Orange level)
Damage assessments after the historic heat wave of June 2021 in Oregon provided lessons for the state's Christmas tree growers. Those assessments showed how damage varied by type of tree and location of farms.
This publication provides a glossary of botanical terms related to hazelnut pollination and describes the flower and nut development process, pollination, and related issues.
Describes key identification features, life cycle, and pest status of filbertworm, filbert weevil, filbert aphid, and hazelnut aphid. Includes color photos.
Vaughn Walton, Ute Chambers, Amy J. Dreves, Denny Bruck, Jeff L. Olsen |
Jul 2021 |
Extension Catalog publicationPeer reviewed (Orange level)
Oregon grape growers face challenges as the frequency and severity of extreme heat events increase due to climate change. Here's how grape growers can protect their crops during a heat wave.