Youbin Zheng, Deron Caplan
Nov 19, 2017
How to Grow Cannabis? With Modern Science and Technology
Applying Science and Technology to Cannabis Cultivation
After decades of prohibition, legal cannabis production is moving from secrecy to science. Yet the industry still suffers from a lack of validated, research-based knowledge. Growers often rely on anecdotal advice or unvetted “grow guides” rather than proven best practices.
Key challenges:
Knowledge gaps: Unlike traditional crops, cannabis lacks a large base of validated cultivation research.
Reliance on outdated or informal sources: Many growers still depend on forums or sales reps.
Environmental impact: High-volume nutrient and water use poses contamination risks if not managed properly.
Technology lag: Despite advances in horticulture (e.g. LED lighting, fertigation), cannabis-specific data is scarce.
Researchers from the University of Guelph emphasize the need for collaborative research between scientists and growers. Controlled-environment agriculture has generated decades of insights—on lighting, pest control, water treatment, and more—that can be applied to cannabis.
Examples include:
Lighting: LEDs outperform HPS lamps and can be fine-tuned to influence cannabinoid production, but cannabis-specific lighting studies are limited.
Water and nutrient reuse: Lessons from other crops can help prevent disease spread and reduce environmental impact.
Policy implications:
With legalization expanding, governments must regulate not just product quality but also cultivation methods. Current regulations prioritize safety and security, not production standards. Scientific research can inform policies that protect public health, support industry, and reduce ecological harm.
Ultimately, integrating cannabis into the broader world of horticultural science will benefit growers, consumers, and policymakers alike.