Gray Mold & Bud Rot: Defeating Botrytis with Science
"No edits, no nets—just like the Grateful Dead." In this episode of the IPM series, Brandon Hudson (Tatu Sadhu) tackles the dreaded Botrytis cinerea, better known as Gray Mold or Bud Rot. This ubiquitous pathogen strikes fear into the hearts of outdoor and greenhouse growers, but understanding its life cycle is the first step toward a mold-free harvest. Brandon explains why Botrytis isn't just a "bad luck" event—it's a calculated move by a necrophytic pathogen that feeds on dead tissue. We dive into the "IPM Triangle," the importance of avoiding the "Cotton Candy Factory" in week seven, and why your plant's physical shape (morphology) might be its best defense. In This Video, We Cover: The "PNW" Pathogen: Why wet, cold climates and the fall temperature drop trigger Botrytis outbreaks. Morphological Resistance: Why "Trimmer’s Dream" genetics with open bud structures are naturally more resistant than dense, "Party Colas." The Week 3 Deadline: Why you MUST start your biocontrol treatments by day 21 of flower to be effective. The "Savings Account" Strategy: Using Silica, Calcium, and Copper (based on Dr. Bruce Bugbee's research) for systemic resistance. Proactive Biocontrols: How to use Trichoderma (RootShield) and Bacillus subtilis (Cease) to out-colonize the mold. The Reclaim Question: The scientific difference between Botrytis and Fusarium regarding mycotoxins and "moldy bud" safety. About Brandon Hudson / Tatu Sadhu Former Tattoo Artist and Deadhead dedicated to bridging the gap between high-level cultivation science and the organic grower. With over 40 years of cannabis cultivation experience, I now work as the agronomist and consultant with KIS Organics. Join me every Thursday for Soil Tech deep dives and every Tuesday on the @kisorganics YouTube channel at 5 PM EST for our Live sessions. Links Follow on Instagram: @tatusadhu Check out KIS Organics: www.kisorganics.com #LivingSoil #SoilScience #OrganicCultivation #TatuSadhu #BrandonHudson #KISOrganics #Botrytis #BudRot #GrayMold #IPM #CannabisCultivation #OrganicPestControl
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