FIM Cannabis Training Explained (Part 1): What Is FIM and Does It Really Work?

Can one small cut create four new main colas instead of two? In this first part of our FIM series, we explore one of the most misunderstood cannabis training techniques ever developed. Learn where the name "FIM" came from, how it differs from traditional topping, the plant biology behind the technique, and why the success of a FIM cut depends on precision and timing. Whether you're a beginner or an experienced grower, understanding what happens inside the shoot tip will help you make better training decisions and avoid common mistakes. This science-based episode explains the anatomy of the cannabis apical meristem, apical dominance, auxin distribution, and why FIM can sometimes produce three, four, or even more new growing tips.