Cody Copp

Assistant Professor of Practice

Contact me for questions related to commercial and home horticulture in Umatilla County and Eastern Oregon.

541-938-5597
[email protected]

Expertise: Fruit trees , Wine grapes

Locations: Umatilla County , Umatilla County – Milton-Freewater

Links: OWRI Profile , Oregon Wine Research Institute , Department of Horticulture , Horticulture Profile

Content by Cody Copp

2024 Pest Management Guide for Tree Fruits: Hood River, The Dalles, White Salmon, Rogue Valley, Umatilla County

This guide provides tree fruit growers with the latest information on pesticides and herbicides for fruit trees. People who grow apples, pears and cherries can learn application rates and recommendations for each stage of tree growth.

Ashley Thompson, Rick Hilton, Achala KC, Marcelo Moretti, Jay W. Pscheidt, Nik Wiman, Christopher Adams, Andony Melathopoulos, Cody Copp | May 2024 | Extension Catalog publication Peer reviewed (Orange level)

Sunscreen for grapevines: Kaolin clay use in Pacific Northwest vineyards

Research poster from the Oregon Wine Research Institute's 2024 Grape Day.

Cody Copp | Apr 2024 | Presentation

Pest management schedule for peach, nectarine, and apricot trees in Eastern Oregon

This document outlines a suggested management schedule for the most common insect pests and diseases of apple trees in Eastern Oregon.

Cody Copp | Mar 2024 | Educational document Peer reviewed (Gray level)

Home fruit tree care in Eastern Oregon

Fruit trees can thrive in Eastern Oregon, but there are considerations for growing them in our unique climate.

Cody Copp | Mar 2024 | Collection

Home Fruit Tree Care in Eastern Oregon

Watch this video to learn more about pest management, tree care, and pruning fruit trees in Eastern Oregon.

Cody Copp | Mar 2024 | Video

2024 Pest Management Guide for Wine Grapes in Oregon

Learn the most effective techniques for controlling insects, weeds and disease on wine grapes in Oregon. Study strategies for controlling powdery mildew, botrytis bunch rot and spider mites.

Patricia A. Skinkis, Jay W. Pscheidt, Achala KC, Marcelo Moretti, Vaughn Walton, Cody Copp | Feb 2024 | Extension Catalog publication Peer reviewed (Orange level)

Sunscreen for grapevines: Kaolin clay use in vineyards

Kaolin clay has multiple potential uses for wine grape production. Watch this presentation to learn more about current research evaluating the effects of kaolin clay in vineyards.

Cody Copp | Dec 2023 | Video

2023 Green Pea Variety Trial Report

A field trial of new and established green processing pea varieties has been conducted in the Milton-Freewater, OR, area since the mid-1980s to support the historic green pea industry in the region. This report summarizes the results of the 2023 Green Pea Variety Trial conducted in a commercial field near Milton-Freewater, OR.

Cody Copp | Nov 2023 | Publication

Pest management schedule for backyard cherry trees in Eastern Oregon

This document outlines a suggested management schedule for the most common insect pests and diseases of cherry trees in Eastern Oregon.

Cody Copp | Jul 2023 | Publication Peer reviewed (Gray level)

2022 Green Pea Variety Trial Report

A field trial of new and established green processing pea varieties has been conducted in the Milton-Freewater, OR, area since the mid-1980s to support the historic green pea industry in the region. This report summarizes the results of the 2022 Green Pea Variety Trial conducted in a commercial field near Milton-Freewater, OR.

Cody Copp | Mar 2023 | Publication

Pest management schedule for backyard apple trees in Eastern Oregon

This document outlines a suggested management schedule for the most common insect pests and diseases of apple trees in Eastern Oregon.

Cody Copp | Feb 2023 | Publication Peer reviewed (Gray level)

Pinot leaf curl disorder

Pinot leaf curl is a physiological disorder of wine grapes marked by characteristic foliar symptoms early in the season. It may be associated with prolonged cool temperatures and disruption of typical nitrogen metabolism in developing shoots.

Cody Copp, Alexander Levin | Jan 2023 | Article Peer reviewed (Gray level)

Managing grapevines during a heat spike

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.

Cody Copp, Alexander Levin | May 2022 | Article Peer reviewed (Gray level)

OSU Extension outreach helps slow the spread of deadly X-disease in cherries

In the gorge, a survey of 50 orchardists at the 2022 Cherry Day suggests that 86% of those cherry producers can confidently identify X-disease and 48% have removed at least one infected tree since Thompson started her outreach in 2018.

Ashley Thompson, Cody Copp | Apr 2023 | Impact story

VIT TECH provides continuing education resources for northeast Oregon viticulturists

Post-webinar surveys indicated that 100% of respondents learned something new, 64% of respondents are likely to change their practices based on this information, and 100% of respondents are likely to attend future sessions.

Cody Copp | Apr 2024 | Impact story

Don’t be fooled, figs grow fine in western Oregon

Figs grow fine in the long corridor of western Oregon, where the climate offers not-too-cold winters and hot-enough summers.

Kym Pokorny | Aug 5, 2023 | News story

Training a fruit tree into an espalier takes a good dash of dedication

Turn a tree into a space-saving specimen with some tips from an OSU Extension expert

Kym Pokorny | Jul 10, 2023 | News story

OSU Extension research gives wine grape growers in Umatilla County hope for adjusting to changing climate

A pilot study for using kaolin clay on wine grapes to reduce heat stress and sunburn in the Walla Walla Valley found that using kaolin produced greater yields and fruit quality compared to the control plot, where kaolin wasn’t applied.

Cody Copp | Mar 2023 | Impact story

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