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THC Living Plant Atlas system
Root System
Root architecture, root-tip growth zones, lateral-root initiation, root hairs, rhizosphere exchange, radial water transport, aquaporins, oxygen availability, water and nutrient uptake, microbiomes, exudates, mycorrhizal interfaces, and root stress.
10 structured lessons6 learning goals19 indexed topics
System progress
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Next unfinished lessonRoot architecture
Continue learningConnected biology
This system does not work alone.
Root water, oxygen, ion availability, and root health directly shape vascular supply, leaf behavior, and whole-plant stress patterns.
Follow the connection
Stem & Vascular SystemStem anatomy, support, xylem, phloem, vascular cambium, secondary growth, transport, source-sink allocation, internodal spacing, hydraulics, damage response, and recovery.LeavesLeaf tissue anatomy, morphogenesis, leaflet complexity, photosynthesis, stomata, transpiration, leaf age, energy balance, inspection, and observation-first symptom interpretation.Environment OverlayCoupled whole-plant environment overlay for PPFD, DLI, photoperiod, CO2, temperature, humidity, VPD, airflow, leaf energy balance, canopy light acclimation, water, root-zone supply, nutrients, pH, EC, and interacting limitations.Diagnostic OverlayObservation-first diagnostic overlay for symptom location and progression, environmental and root-zone context, nutrient tissue analysis, root/crown biotic-versus-abiotic clues, senescence, pest and pathogen evidence, differential diagnosis, evidence weighting, and confirmatory testing.
Developmental context
Measure or record with it
- Substrate moisture
- Root-zone EC
- Root-zone pH
- Root temperature
- Irrigation volume and interval
Interactive visual lab
Root-Zone Interaction Lab
Roots respond to water, oxygen, ionic concentration, pH, temperature, media structure, and biology as one interacting system. A single root-zone reading rarely explains plant response by itself.
Change one variable, then read the interaction
Water status
Water and air-filled pore space can coexist when media structure and irrigation timing are appropriate.
Interpret togetherWater, oxygen, EC, pH, temperature, and media structure interact. Do not use this control as a standalone diagnosis.
Pair the visual with these observations
root color and new tipsmedia moisture distributionirrigation frequencyroot-zone temperaturepH and EC measurement methododor or signs of decay
Learning objectives
What this system should teach
Visual curriculum
Root System lesson sequence
Each lesson is structured around a visual reference so the Atlas can replace dry text-first learning with observation and diagrams.Lesson 01
Root architecture
Follow primary roots, lateral branching, fine roots, and root hairs through the occupied media volume.
Open visual lessonRoot-zone cutaway
Lesson 02
Root hairs & absorption
See where most short-lived absorbing surface develops and how root hairs increase contact with the surrounding solution and media.
Open visual lessonRoot-hair microscope diagram
Lesson 03
Rhizosphere
Explore the narrow root-influenced zone where water, ions, microbes, exudates, and oxygen conditions interact.
Open visual lessonRhizosphere interaction map
Lesson 04
Water & nutrient uptake
Connect substrate moisture, ion availability, root membrane transport, transpiration demand, and vascular movement.
Open visual lessonRoot-to-shoot uptake flow
Lesson 05
Root stress
Compare low oxygen, persistent saturation, excessive dryback, salt stress, temperature stress, and visible root decline as patterns that require context.
Open visual lessonHealthy vs stressed root comparison
Lesson 06
Root-zone oxygen diffusion
Compare air-filled and water-filled pore space to understand why oxygen replenishment can become limiting when media remains saturated and root or microbial respiration continues.
Open visual lessonRoot-zone pore-space oxygen diffusion diagram
Lesson 07
Root tip zones & apical growth
Move from the protective root cap through the apical meristem, elongation zone, and differentiating tissues to connect cell division and expansion with forward root growth while keeping Cannabis-specific anatomy distinct from general vascular-plant mechanisms.
Open visual lessonPhotorealistic root-tip longitudinal cutaway with growth zones
Lesson 08
Lateral root initiation & architecture plasticity
Follow lateral roots from internal initiation into emergence and branching, then compare documented hemp variation in root-system architecture and root-shoot allocation without turning one genotype or growth system into a universal root blueprint.
Open visual lessonLateral-root initiation to whole-root architecture sequence
Lesson 09
Radial water transport & aquaporins
Trace water from the rhizosphere across epidermal, cortical, and endodermal tissues toward xylem through apoplastic and cell-to-cell pathways, using general plant aquaporin evidence for regulated membrane permeability where Cannabis-specific measurements are limited.
Open visual lessonRhizosphere-to-xylem radial water pathway and aquaporin diagram
Lesson 10
Root microbiome, exudates & mycorrhizal interfaces
Map Cannabis root exudates, rhizosphere and endosphere microbial communities, and arbuscular-mycorrhizal interfaces as dynamic associations shaped by genotype, substrate, environment, inoculum, and management rather than as guaranteed beneficial effects.
Open visual lessonCannabis root microbiome and mycorrhizal interface map
Reference index
Topics connected to this system
Primary rootAdventitious rootsLateral rootsRoot capApical meristemElongation zoneRoot hairsRhizosphereRadial water transportAquaporinsRoot oxygenWater uptakeNutrient uptakeRoot architectureRoot microbiomeExudatesMycorrhizaeDrybackRoot stress