Drug-type Cannabis sativa responses to pruning, primary- and secondary-branch removal, defoliation, canopy light gradients, plant height, architectural plasticity, inflorescence yield, and within-plant chemical uniformity.
Visual lesson 03
Topping & FIM
Compare removal points and the resulting redistribution of active shoot growth while separating established pruning evidence from grower-specific FIM terminology and avoiding claims that every genotype will branch identically.
Interactive academic visual
Topping & FIM
Different removal points alter which meristems remain available for subsequent growthShoot apex
The intact apical meristem maintains the primary growing tip and influences lateral bud behavior.
Knowledge check
PracticeCan you explain what the visual is showing?
What is the main biological idea behind removing or partially disrupting the shoot apex?
Track this lesson
Mark the lesson complete when you are comfortable with the visual, observations, and system context.
Evidence & further reading
Sources connected to this lesson
These references support specific biological, diagnostic, environmental, or process concepts used in this lesson. They are not a substitute for crop-specific testing or local regulatory guidance.Indoor Cannabis sativa architecture and biomass response in one chemotype-III genotype under apical cutting, side-shoot removal, and unpruned control treatments; supports treatment-specific observations rather than universal pruning rules.
General flowering-plant evidence on apical dominance, axillary bud release, auxin transport, cytokinin, strigolactone, sugars, and the limits of single-signal explanations for shoot branching.
Cannabis leaf morphogenesis, phyllotaxy, plant architecture, reproductive transition, inflorescence development, trichome development, and senescence across a complete life cycle.
Female cannabis phytomer organization, solitary flowers, branching, photoperiod response, inflorescence architecture, and floral development.
Female cannabis photoperiod response, shoot-apex architecture, internode elongation, condensed inflorescence development, gibberellin, and auxin context.
System context