This Week in Viticulture:
28 February 2023

Below are quick-links to relevant topics in this email:
  1. WSU Viticulture Intern Boot Camp
  2. 2023 Pest Management Guide for Grapes in Washington Now Available
  3. Understanding Vineyard Soil Health
  4. WSU Grapevine Cold Hardiness Monitoring
  5. VE Events Calendar

WSU Viticulture Intern Boot Camp - Save the Date!

The WSU Viticulture Intern Boot Camp is back, and scheduled for May 23, 2023!  Registration is not yet open, but if you are a student interested in participating, or a vineyard who is hosting an intern this summer, check out the program at:
2023 Pest Management Guide for Grapes in Washington Available!

Download, or order a hard copy of, the 2023 Pest Management Guide for Grapes in Washington. Access this guide at the WSU Extension Publications website:
Understanding Vineyard Soil Health

WSU has a new Extension publication out, titled: Soil Health in Washington Vineyards.  This guide explains how to interpret metrics related to monitoring soil health, and how to use those metrics to develop vineyard management plans.  Download a copy at:

Cold Hardiness Monitoring - Back again for 2022-2023!
WSU Viticulture will continue with grape cold hardiness monitoring for the 2022-2023 winter season.   Observed cold hardiness data for the Prosser, WA area is updated approximately every 7-14 days at:

This webpage also has several resources on preventing cold damage and how to respond after cold damage has occurred.

Given cold hardiness monitoring cannot be done on a large scale, a cold hardiness model is available on AgWeatherNet.  You do need a (free!) registered AgWeatherNet Account to see the model:

With the forecast low temperatures for this week dipping to levels that may cause damage, use the model on AgWeatherNet to help prioritize which locations, and varieties, you should start with for follow-up scouting.  The resources available on the WSU Grapevine Cold Hardiness Monitoring page above can be used to help you develop a bud collection and assessment plan. They also provide worksheets to develop pruning strategies to compensate for potential crop loss, should cold damage occur.

Events Calendar

See the WSU Viticulture and Enology calendar for upcoming events:

Michelle M. Moyer, Ph.D.
Associate Professor, Viticulture Extension Specialist
Prosser, WA
phone: 509-786-9234


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Good wine comes from good grapes... and good grapes rely on good weather.  Sign up for an AgWeatherNet account (it's free!) and see the valuable weather and weather-driven models the largest University Weather Network in the country has to offer!


V&E Newsletters

The V&E Department at WSU has a few newsletters for the industry! Check out the Viticulture and Enology Extension News (VEEN), the twice-a-year publication relating to extension information for producers and winemakers, or Voice of the Vine, a publication with news highlights for a general-interest audience.



Irrigated Ag Team

Andrew McGuire
Tianna DuPont
David Granatstein
Thomas Henick-Kling

Gwen Hoheisel
Karen Lewis
Don Llewellyn

Michelle Moyer
Troy Peters

Steve Norberg
Sarah M. Smith
Tim Waters
Carrie Wohleb


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