Cannabis sativa primary-to-secondary growth transition, vascular cambium activity, secondary xylem development, phloem bast fibers, cell-wall maturation, and radial thickening in hemp hypocotyl tissue.
Visual lesson 07
Vascular cambium & secondary growth
Follow the transition from primary growth toward radial thickening as vascular cambium produces additional secondary xylem inward and secondary phloem outward, while recognizing that tissue development changes along the age gradient of the stem.
System study map
Vascular cambium & secondary growth
Cannabis stem primary-to-secondary growth cross-section sequenceStart with the highlighted plant system as the anatomical context. Then compare the lesson observations with the evidence sources and knowledge check below so structure, process, and whole-plant consequences stay connected.- Plant system
- Stem & Vascular System
- Lesson focus
- Cannabis stem primary-to-secondary growth cross-section sequence
- Study mode
- Whole-plant context
Knowledge check
PracticeCan you explain what the visual is showing?
What best describes the role of vascular cambium during secondary growth in a cannabis stem?
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.Cannabis sativa stem morphology and cross-sectional anatomy, including peripheral bast fiber bundles, xylem-rich inner tissues, lignification gradients, internode traits, and genotype-dependent structural variation.
Plant source–sink relationships, phloem loading and unloading, sieve-element transport, pressure-driven bulk flow, and regulatory context.
Cannabis leaf morphogenesis, phyllotaxy, plant architecture, reproductive transition, inflorescence development, trichome development, and senescence across a complete life cycle.
System context