Record day length or light schedule, dark-period integrity, developmental age, node changes, internode response, and visible floral milestones.
Visual lesson 06
Photoperiod sensing & floral transition
Separate photoperiod sensing and meristem reorganization from the later appearance of dense flowers by following adult shoot-apex branching, internode shortening, floral development, and genotype-dependent timing.
Reproductive transition
Interactive concept mapPhotoperiod signal precedes the full visible flower phenotype
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Light/dark cue
The plant interprets photoperiod through light-sensitive signaling systems and developmental state.
The date of a schedule change is not identical to the date of visible flower initiation; signaling and morphology unfold over time.
Knowledge check
PracticeCan you explain what the visual is showing?
Why is photoperiod response not identical to the first day that visible flowers appear?
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.Female cannabis photoperiod response, shoot-apex architecture, internode elongation, condensed inflorescence development, gibberellin, and auxin context.
Female cannabis phytomer organization, solitary flowers, branching, photoperiod response, inflorescence architecture, and floral development.
Cannabis sativa floral ontogeny and transcriptomic evidence integrating shoot-apex and flower-development morphology with conserved floral-organ identity networks; useful for meristem and early floral-development context without treating transcript abundance as a direct horticultural prescription.
Cannabis leaf morphogenesis, phyllotaxy, plant architecture, reproductive transition, inflorescence development, trichome development, and senescence across a complete life cycle.
System context