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Tree Fruit

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

Fall nutrient management tree fruit

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In most perennial fruit trees, initial Spring growth and early fruit development rely mainly on nutrient reserves accumulated the previous season. There is evidence that…

Extension Technician Position Available

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Join WSU’s Tree Fruit Extension Team.  Nationally, Washington ranks first in the production of apples, sweet cherries, and pears. The Washington tree fruit industry contributes…

Women in Ag Conference Oct 27, 2018

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Learn how to strengthen your farm operation with a healthy cash flow and make it possible to do what you love most! The day will…

Agricultural Robotics Internship in Australia/New Zealand

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Abundant Robotics is preparing to deploy the world’s first robotic apple harvesters. We are seeking interns to help operate, evaluate the performance of, and nominate…

Green Lacewings – 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 now with…

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Featured Event

Next Generation Tree Fruit Network Event: ECONOMICS

Oct 24, 2018
Join the Next Generation Tree Fruit Network when OSU’s Clark Seavert will lead a discussion of how to analyze potential investments. We will discuss the economics of: new varieties, planting vs grafting, and, the future of…

Upcoming Events


Next Generation Tree Fruit Network Event: ECONOMICS

Confluence Technology Center
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Pear IPM Discussion

Mission Creek Community Club
Event Details


WA 38 Pruning Tour – Greater Yakima Valley Region

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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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