What if keeping the room a little too dry is killing your plants?Humidity—and the HVAC that controls it—drives plant health, but air isn’t uniform across the room. The fix isn’t more AC; it’s dialing VPD so humidity, lights, airflow, and irrigation work together. Get it wrong and you lose yield and fail tests; get it right and buds stay sticky, healthy, and consistent. This week we sit down with Dr. Greenhouse (aka Nadia Sabeh) to discuss: Dry ≠ safe: why extra-dry rooms can actually spread powdery mildew Measure where it matters: a simple toolkit and method at the canopy Design for airflow: room shapes and layouts that keep climate even Summary In this episode, Bryan Fields and Kellan Finney welcome Nadia Sabeh, also known as Dr. Greenhouse, to discuss the intricacies of cannabis cultivation, focusing on HVAC systems, climate control, and the importance of data monitoring. Nadia shares her journey into the cannabis space, her expertise in controlled environment agriculture, and the challenges growers face in maintaining optimal conditions for their crops. The conversation delves into root cause analysis, the significance of understanding plant needs, and the necessity of proper data collection to improve cultivation practices. Nadia emphasizes the importance of customizing environments for different strains and the impact of room geometry on airflow dynamics. She also highlights essential tools for growers and offers final takeaways for improving cultivation practices. Chapters 00:00 Introduction to Dr. Greenhouse and Nadia Sabeh 04:46 Understanding Root Cause Analysis in Cannabis Cultivation 10:54 The Importance of Data Collection and Monitoring 18:04 Troubleshooting HVAC Systems in Cultivation Facilities 24:19 Customization of Environment for Different Strains 30:41 Room Geometry and Airflow Dynamics 40:27 Essential Tools for Growers 50:41 Final Takeaways and Future Tools for Growers Guest Links: https://www.linkedin.com/in/nadia-sabeh-phd-pe-leed-ap-45656315/ https://www.doctorgreenhouse.com/ https://www.youtube.com/@drgreenhouseinc https://www.linkedin.com/company/doctor-greenhouse/ https://www.instagram.com/drgreenhouseinc Our Links Bryan Fields on Twitter Kellan Finney on Twitter The Dime on Twitter Extraction Teams: Want to cut costs and get more out of every run? Unlock hidden revenue by extracting more from the same input—with Newton Insights. At Eighth Revolution (8th Rev), we provide services from capital to cannabinoid and everything in between in the cannabinoid industry. 8th Revolution Cannabinoid Playbook is an Industry-leading report covering the entire cannabis supply chain The Dime is a top 5% most shared global podcast The Dime is a top 10 Cannabis Podcast The Dime has a New Website. Shhhh its not finished. Sign up for our playbook here: 🎥 YouTube:  The Dime 📸 Instagram:  The Dime https://www.newton-insights.com/