Varroa Management Guide Update with Dewey Caron (380)

In this episode of Beekeeping Today Podcast, Jeff Ott and Becky Masterman welcome Dr. Dewey Caron for a wide-ranging discussion on Varroa management, beekeeping education, and the evolving work of the Honey Bee Health Coalition.

Dewey shares his journey from academic entomology to a "retirement" filled with teaching, research, and extension work across the Pacific Northwest. Now based in Oregon, he continues to educate beekeepers through presentations, writing, and his monthly Bee Science series on the podcast.

A central focus of the episode is Dewey's work with the Honey Bee Health Coalition (HBHC), which brings together researchers, beekeepers, industry representatives, and regulators to provide science-based, unbiased guidance for honey bee health. Dewey explains how the Coalition's Tools for Varroa Management guide has evolved since its first release in 2014 and is now approaching its ninth edition.

One of the most important updates discussed is a shift in recommended Varroa thresholds. Where beekeepers once tolerated higher mite levels, emerging research and field experience show that even low mite counts—around 1%—can present significant risk due to the viruses Varroa mites vector, including Deformed Wing Virus (DWV) and related pathogens.

The conversation also highlights the Coalition's decision tool, which helps beekeepers navigate treatment options based on their management style, seasonal timing, and colony conditions. Dewey emphasizes that successful Varroa management is not about a single product, but about integrating monitoring, thresholds, and multiple control strategies.

The episode also touches on Dewey's long-running Pacific Northwest colony loss survey, offering insights into overwintering success, beekeeper experience levels, and management practices across the region.

This episode reinforces a key message: effective beekeeping today requires informed, proactive Varroa management grounded in science and adapted to changing conditions.

Websites from the episode and others we recommend:

• Honey Bee Health Coalition: https://honeybeehealthcoalition.org
• Project Apis m. (PAm): https://www.projectapism.org
• The National Honey Board: https://honey.com
• Honey Bee Obscura Podcast: https://honeybeeobscura.com

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This episode is brought to you by Global Patties! Global offers a variety of standard and custom patties. Visit them today at http://globalpatties.com and let them know you appreciate them sponsoring this episode!

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Thanks to Strong Microbials for their support of Beekeeping Today Podcast. Find out more about their line of probiotics in our Season 3, Episode 12 episode and from their website: https://www.strongmicrobials.com

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We'd like to thank Vita Bee Health for supporting the podcast. Vita provides proven tools for controlling Varroa—from Apistan and Apiguard to the new VarroxSan extended-release oxalic acid strips—helping beekeepers keep stronger, healthier colonies.

Thanks for Northern Bee Books for their support. Northern Bee Books is the publisher of bee books available worldwide from their website or from Amazon and bookstores everywhere. They are also the publishers of The Beekeepers Quarterly and Natural Bee Husbandry.

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We hope you enjoy this podcast and welcome your questions and comments in the show notes of this episode or: questions@beekeepingtodaypodcast.com

Thank you for listening!

Podcast music: Be Strong by Young Presidents; Epilogue by Musicalman; Faraday by BeGun; Walking in Paris by Studio Le Bus; A Fresh New Start by Pete Morse; Wedding Day by Boomer; Christmas Avenue by Immersive Music; Red Jack Blues by Daniel Hart; Bolero de la Fontero by Rimsky Music; Perfect Sky by Graceful Movement; I'm Not Running Away This Time by Max Brodie; Original guitar background instrumental by Jeff Ott.

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Copyright © 2026 by Growing Planet Media, LLC