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PODCAST

Cannabis Cultivation and Science Podcast

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..

science natural sciences

All Episodes

01:10:31

Episode 161: The Secret Lives of Pathogens with Dr....

Cannabis Cultivation and Science Podcast ·

2026/03/17

Key Takeaways for CultivatorsThe Week 3 Strategy: Preventive sprays for Botrytis must occur when the flowers are still small and "open." Once the bud swells (Weeks 6+), the pathogen is already locked inside. Airflow is Everything: Buds act as heat sinks. Use fans 24/7 to cool the internal temperature of the flower, which is significantly higher than your room’s ambient temperature. Identify Your Mold: If your bud rot looks pink or white rather than grey, it may be Fusarium. This is a systemic issue

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01:17:26

Foundations Series #5: Reading the Soil: Agronomy,...

Cannabis Cultivation and Science Podcast ·

2026/03/10

Key Topics & Notes• Why experienced crop consultants rely heavily on chemical soil analysis for making management decisions • The limitations of relying solely on biological soil testing • Why soil structure and aggregation play a critical role in plant health • How soil physical properties influence water movement, aeration, and root development • The importance of walking fields and directly interacting with soil • Using smell, texture, and visual indicators to understand soil conditions •

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01:09:44

Foundations Series #4: What's Your Garden Missing?...

Cannabis Cultivation and Science Podcast ·

2026/03/03

Key Takeaways:Botany vs. Hacks: Moving past "quick fixes" to understand the biological lens of plant science. The Limiting Factor: Learning to identify the specific environmental or nutritional gaps holding your plants back. Timeless Principles: Why botanical fundamentals are the most reliable tools in a cultivator’s shed, regardless of changing trends. Applied Horticulture: Bridging the gap between academic theory and high-level landscape maintenance. About Don Marshall: Don is a Certified

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00:19:40

Foundations Series #3: The Soil Food Web: Science,...

Cannabis Cultivation and Science Podcast ·

2026/02/24

The Underground Economy: Carbon as Currency Biological Gold: Why photosynthesis isn't just about plant growth—it’s about minting the "carbon currency" required to hire a microbial workforce. The Exudate Menu: A breakdown of Monosaccharides (fast cash), Polysaccharides (savings accounts), and Organic Acids (specialized mining tools). The Trading Post: How the plant uses targeted "buy orders" to trade energy for the specific minerals it needs. The Rhizophagy Revolution The "Commuter" Microbes:

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00:57:52

Foundations Series #2: Lean Farming & Efficient...

Cannabis Cultivation and Science Podcast ·

2026/02/17

This episode is part of the Foundations of Soil & Plant Science series — a selection of conversations that continue to influence how I approach soil health, plant performance, and cultivation systems. I’ve added a short new intro to each re-release with updated perspective and context.Originally released as Episode 20My guest for this episode is Ben Hartman, farmer and author of The Lean Farm.Ben operates Clay Bottom Farm in Goshen, Indiana, and is known for applying lean manufacturing principles to

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01:20:53

Foundations Series #1: Silicon in Plant Health &...

Cannabis Cultivation and Science Podcast ·

2026/02/10

My guest for this episode is Dr. Wendy Zellner.Dr. Zellner received her doctorate from the University of Toledo in 2012, where she trained in molecular and cellular biology with a focus on the role of silicon in plant defense responses. She then completed a four-year postdoctoral position with the USDA-ARS, continuing her research on how silicon can alleviate both abiotic and biotic stress in crops such as tomato and tobacco.Her work has included developing standard methods for quantifying silicon

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01:15:37

Episode 155: Entomopathogenic Fungi Explained:...

Cannabis Cultivation and Science Podcast ·

2026/01/07

Guest: Julie GraeschBiological Scientist | IPM SpecialistCurrently with BioWorksFormerly: BASF, Becker Underwood, Iowa State UniversityTopics Covered:What “entomopathogenic fungi” actually meansHow fungi like Beauveria and Metarhizium infect insect pestsDifferences between blastospores and conidiaWhy formulation and environmental conditions matterCommon reasons fungal biocontrol applications failPreventative vs. reactive use of entomopathogenic fungiIntegrating fungal biologicals into a broader IPM

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01:25:51

Episode 154: Is Seed Based Cultivation the Future of...

Cannabis Cultivation and Science Podcast ·

2025/12/10

n this conversation with plant scientist and commercial cultivation strategist Dr. Matthew Indest, we explore the emerging frontier of seed-based cannabis production and what it would take for the industry to move beyond clonal propagation.We cover:The agronomic upside of seed-grown plants (disease resistance, vigor, adaptability, cost savings)The scientific and operational barriers preventing widespread seed adoptionHow genetic stability, inbreeding depression, and trait selection differ between

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01:10:33

Episode 153: Rethinking the Basics: pH, Water, Light...

Cannabis Cultivation and Science Podcast ·

2025/11/18

This wide-ranging conversation with Bryant Mason covers a series of essential—but frequently misunderstood—topics in organic cultivation. We explore why simple, low-tech data collection strategies often outperform high-tech systems and how to interpret those readings in the real world. From there, we break down how pH truly behaves in biologically active soils, what your water test results do and don’t tell you, and how water chemistry shapes nutrient availability.We also discuss practical

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01:00:47

Episode 152: Light, Spectrum, and Plant Signals — A...

Cannabis Cultivation and Science Podcast ·

2025/11/04

In this conversation, Tad and Dr. David Hawley (Chief Science Officer at Fluence) unpack what really matters when dialing in your lighting strategy for cannabis and other high-value crops. They get deep into how plants perceive light, what “good spectrum” actually means, and how to think about intensity, uniformity, and plant response in a more scientific (and practical) way.Topics covered include:Understanding Daily Light Integral (DLI) and how it relates to plant metabolismWhen to use far-red and

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00:58:00

Episode 151: Light, Spectrum, and Plant Signals — A...

Cannabis Cultivation and Science Podcast ·

2025/10/21

In this conversation, Tad and Dr. David Hawley (Chief Science Officer at Fluence) unpack what really matters when dialing in your lighting strategy for cannabis and other high-value crops. They get deep into how plants perceive light, what “good spectrum” actually means, and how to think about intensity, uniformity, and plant response in a more scientific (and practical) way.Topics covered include:Understanding Daily Light Integral (DLI) and how it relates to plant metabolismWhen to use far-red and

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01:21:00

Episode 150: Plants Under Pressure: How Stress Shapes...

Cannabis Cultivation and Science Podcast ·

2025/08/20

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.🔬

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01:48:05

Episode 149: Lighting Cannabis Right: 2025 Science &...

Cannabis Cultivation and Science Podcast ·

2025/07/08

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

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00:49:10

Episode 148: 15,000 Clones a Year — Cannabis...

Cannabis Cultivation and Science Podcast ·

2025/05/22

📝 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

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01:22:45

Episode 147: The Chemistry of Survival: Plant Stress...

Cannabis Cultivation and Science Podcast ·

2025/04/30

In this episode of theCannabis 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

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01:33:57

Episode 146: Logan Labs, Soil Testing, & Nitrogen...

Cannabis Cultivation and Science Podcast ·

2025/04/10

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

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00:51:04

Episode 145: Practical Greenhouse Management Advice...

Cannabis Cultivation and Science Podcast ·

2025/03/25

Before starting the podcast, I wanted to share about an exciting new conference that we are hosting in conjunction with Collective Elevation in Bozeman, Montana. I’ve been talking to Suzanne Wainwright Evans about hosting a conference for years, and Adam at Collective graciously offered to open up his doors and let us host it on his property. The event is happening on September 5-7th, 2025 and I’m super excited. We are kicking it off with workshops from The Bug Lady Suzanne and Dr. Greenhouse,

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01:11:20

Episode 144: Pest Management Tips and Tricks with...

Cannabis Cultivation and Science Podcast ·

2025/02/26

Saul began his agriculture work in vineyard and winery operations on the Central California coast. After deciding to focus his career on crop protection he moved north where he managed IPM programs at Monterey Mushroom Company and Jacobs Farm/Del Cabo. This work led to a position as IPM Manager at Harborside Farms where he directed their bio-intensive greenhouse cannabis IPM program. Saul now works as a Technical Sales Representative for BioBee USA.

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01:16:13

Episode 143: Trends in Environmental Controls with...

Cannabis Cultivation and Science Podcast ·

2025/02/06

Dr. Nadia Sabeh is the President and Founder of Dr. Greenhouse, Inc., an agricultural and mechanical engineering firm that specializes in the design of HVAC systems for indoor plant environments. Dr. Sabeh has her PhD in Agricultural Engineering from the University of Arizona’s Controlled Environment Agriculture Center (CEAC) and is a licensed Mechanical Engineer in the State of California. For over 20 years, she has dedicated her education and career to helping farmers control their environments,

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00:43:55

Episode 142: Isopods, Pyrethrins, REIs, and More with...

Cannabis Cultivation and Science Podcast ·

2025/01/23

My guest this week is my good friend, Suzanne Wainwright-Evans also known by many as The Bug Lady. She is an Ornamental Entomologist specializing in integrated pest management. Suzanne has been involved in the Green Industry for more than 25 years with a primary focus on biological control and using pesticides properly. She is a graduate of the University of Florida with degrees in both Entomology and Environmental Horticulture. Suzanne has been on the podcast multiple times and I highly suggest

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