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Tree Fruit Research and Extension

WSU Tree Fruit Research and Extension develops and applies research-based information for sustainable tree fruit production in Washington and the world.

Recent News

Pear IPM Field Day

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Join WSU Extension for a field day demonstration and research update Thursday July 19, 2018. Managing pear psylla and mites in the Wenatchee Valley and nearby…

Campylomma bug – Know the Good Guys in your Pear Orchard

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As part of a Pear IPM project we are tracking natural enemies in pear orchards and we wanted to share who is active in the…

The importance of room and bin sanitation to reduce postharvest decay

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With the end of packing of the previous-season crop and the new crop of apple and pear expected shortly, it is important to prepare adequately…


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Join the Okanogan Horitcultural Society for their Summer Field Day Thursday, July 26th 2018. The topic this year is Sterile Insect Release for Control of…

Contribute your Interests the Specialty Crop Block Grant Funding Priorities

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The Washington State Department of Agriculture’s Specialty Crop Block Grant Program would like your help in identifying our state’s funding priorities for 2019. The top…

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Featured Event

Yakima Valley – WA 38 Tour

Jul 20, 2018
This Friday there will be a tour of WA 38 growing sites scattered around the Yakima Valley. Discussions will focus on rootstocks, systems, and tree training. Feel free to come as go as your schedule…

Upcoming Events


Yakima Valley – WA 38 Tour

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Okanogan Horticultural Society Annual Tour

Whitestone Orchard
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Apple Exporter Workshop – Wenatchee

Wenatchee Convention Center
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2017 Impact Report: Tree Fruit Endowment Advisory Committee (pdf)

Featured Videos

The Soil is Alive

A diverse abundant soil food web cycles water and nutrients, suppresses plant pathogens and helps buffer plant stress. Feed the soil food web to improve plant health. Animated video by Tianna DuPont, WSU Extension and…

Mike Willett talks about CM

Mike Willett talks about how pests threaten our crops, like Washington’s iconic apples. See how Washington’s apple growers are using integrated pest management to reduce pesticide use in our apple orchards.

Life on a Leaf

Description of mites that can be found on apple leaves. Video taken with a dissecting microscope 10x-70x.

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Latest Newsletter

Newsletter Archive

Recent Publications

Recent Trends in Certified Organic Tree Fruit in Washington State: 2017

The following slide set presents the current data on organic tree fruit area and production for Washington State, with some associated global and national data. Data come from various sources including certifiers, the World of…

Anthracnose Canker Management Plan for Commercial Apple Orchards in Western Washington

Information for managing anthracnose canker, a major disease limiting apple production in western Washington, western British Columbia, and the Columbia Gorge.

Superficial Scald Risk Assessment Assay for Apples

Step-by-step guide to an assay to quantify risk of superficial scald development. This assay could have benefits for organic fruit—where scald-mitigating treatments and limited—and for conventional fruit where the effectiveness of scald-mitigating treatments can be…

New WPS Respiratory Protection Guide

The Pesticide Education Research Collaborative is happy to announce a new resource, “Worker Protection Standard (WPS) Respiratory Protection Guide: Requirements for Employers of Pesticide Handlers”, a 45-page guide to help employers of pesticide handlers meet…

WA 38 Characteristics & Horticulture Factsheet

Here we will cover growth habit, establishment considerations, training systems, pruning techniques, crop load management, fruit type and fruit quality.

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