Episode 150: Plants Under Pressure: How Stress Shapes Secondary Metabolites (w/ Dr. José Leme)
Can stress actually improve flower quality? In this episode, I sit down with Dr. José Leme to dive into the science of plant stimuli and how growers can apply it in practice. We cover:🌿 Mechanical cues — how super cropping and vibration trigger plant defense pathways.💧 Water restriction — why moderate, timed drought can shift carbon toward secondary metabolites like terpenes and cannabinoids.🧪 Jasmonates (MeJA) — when they increase trichome density, and what trade-offs you need to consider.🔬 Trichome measurement pitfalls — why bracts are the gold standard for consistent data.🌱 Propagation & trial design — the importance of clonal fidelity and standardized protocols when testing stress strategies.Dr. Leme and I also highlight practical guardrails for growers: cultivar differences, timing, and the “sweet spot” between beneficial stress and damaging stress.📄 Referenced Studies:Water Deficit Stress and Secondary MetabolitesJasmonates in Growth, Trichomes, and CannabinoidsMetabolic Responses to Water DeficitTrichome Sampling & Quantification MethodsTrigonelline as a Biomarker for Drought Stress (Preprint)Propagation & Clonal Fidelity in Cannabis ResearchAdditional vibration study discussed in the episode.🎧 Whether you’re a grower, consultant, or researcher, this conversation will give you a framework for using stress not as a risk—but as a precision tool to enhance plant quality.
This week on the Cannabis Cultivation and Science Podcast, we're diving deep into lighting and photobiology with Shane Torpey, founder of MIGRO. With a background in engineering and construction, Shane turned his passion for growing into a global grow lighting company known for trusted reviews and educational content.We break down what’s working—and what’s not—in cannabis lighting for 2025, including:Far-red and intra-canopy lightingLED vs. HPS and how to transitionMaximizing PPFD without added CO₂Dimming schedules at sunrise/sunsetThe impact of lenses on LED light penetrationWhat really matters when choosing a grow lightEmerging technologies shaping the future of cultivationWhether you’re scaling a facility or dialing in your home grow, this episode gives you the tools to make smarter lighting decisions rooted in science and real-world data.Links to channels here:https://www.youtube.com/@MIGROLIGHThttps://www.instagram.com/migrolight/https://www.facebook.com/MIGROLIGHT/https://www.tiktok.com/@migrolight
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Episode 148: 15,000 Clones a Year — Cannabis Propagation with Connor Ockfen
📝 Episode Highlights:Connor’s journey from greenhouse grower to propagation leaderScaling propagation: key infrastructure and protocolsHormonal treatments and substrate selection for optimal rootingManaging cultivar libraries and mother plant healthIPM and environmental control strategies tailored for vegWriting and refining SOPs for compliance and consistencyTrack-and-trace integration in a regulated cannabis marketThe role of living soil vs. hydroponics in Connor’s career🧪 Mentioned in This Episode:Collective Elevation: www.collectiveelevation.comKIS Organics Products & Podcast: www.kisorganics.comCannabis Cultivation & Science Conference: September 5–7, 2025, Bozeman, Montana — featuring Suzanne Wainwright-Evans, Dr. Greenhouse, Jeremy Plumb, and more. Early bird tickets available now!Join our Patreon for bonus content: Patreon.com/KISOrganics
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Episode 147: The Chemistry of Survival: Plant Stress Responses with Dr. Michael Gutensohn
In this episode of the Cannabis Cultivation and Science Podcast, we’re joined by Dr. Michael Gutensohn, an expert in plant physiology and secondary metabolism, to explore the intricate relationship between environmental stress and the production of secondary metabolites in cannabis. We discuss how various abiotic stressors—such as light intensity, temperature fluctuations, and nutrient availability—can influence the biosynthesis of key phytochemicals, including cannabinoids, terpenes, and flavonoids.
Dr. Gutensohn shares insights from his research on plant defense mechanisms, metabolic signaling pathways, and how growers might harness controlled stress to enhance both plant resilience and phytochemical output. Whether you’re a cultivator aiming to fine-tune your grow environment or a scientist delving into cannabis metabolomics, this episode offers valuable, research-backed perspectives on optimizing secondary metabolite production through stress modulation.
Welcome to the Cannabis Cultivation and Science podcast, I'm your host Tad Hussey of KIS Organics. This is the podcast where we discuss the cutting edge of growing from a science based perspective and draw on top experts from around the industry to share their wisdom and knowledge. My guest this week is Bryant Mason. I’ve had Bryant on the podcast a few times in the past and he’s one of my favorite guests.Bryant is a Certified Crop Advisor who specializes in organic cannabis nutrition. He has spent the last 8 years working to combine precision laboratory techniques with data science in an effort to unravel the complexities of cannabis soil and crop nutrition. Along with his work on soilless media, he also helps outdoor cultivators around the U.S. with nutrient management and cover cropping. If you would like to do soil testing, help interpreting a soil test, or are interested in an online course on these subjects, his website is www.soildoctorconsulting.com. If you want to save $100 on his course, you can use the discount code KISORGANICS, all one word. I’ve taken his course and was recently going back to review some of the content. It’s excellent and I highly recommend it for anyone wanting to do a deep dive on cannabis fertility and re-using your soil.After recording the podcast with Bryant, he had a couple of points he wanted to clarify so there is a short addendum that I added in at the very beginning of the podcast.Now on to the show!
Welcome to the Cannabis Cultivation and Science podcast, I’m your host, Tad Hussey of KIS Organics. This is the podcast where we discuss the cutting edge of organic growing from a science based perspective and draw in top experts from around the industry to share their wisdom and knowledge. If you want to hear the latest in growing technology and methods, this is the place..
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