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

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Nadia Sabeh

Episodes with Nadia Sabeh