Plant Atlas

Interactive cannabis anatomy

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Plant anatomy · Trichomes & Resin

Trichomes

Secretory disk, cavity, stipe & stalkNot started · 0/10 lessons

Scientific detail previewGlandular-trichome developmental and anatomy plateSecretory disk, cavity, stipe & stalk

Glandular trichome types and developmental states, secretory-disk anatomy, storage cavity, stipe and stalk specialization, sessile-like precursors, secretory-cell metabolism, optical maturity, gland aging and dehiscence, sampling bias, and microscope workflow.

Key functions

✓Differentiate from epidermal precursor states into specialized glandular structures✓Synthesize specialized metabolites in secretory head tissues and store them in a subcuticular cavity✓Use distinct stipe and stalk tissues associated with structural support, transport, precursor supply, and signaling✓Provide microscopic developmental observations only when tissue, gland integrity, lighting, and sample location are controlled

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Whole-plant learning map

See what you know across the plant.

Study dashboard Review weak areas

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Seed & Germination

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Root System

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Stem & Vascular System

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Nodes & Branching

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Leaves

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Flowers

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Trichomes & Resin

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Sex, Pollen & Seeds

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Environment Overlay

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Diagnostic Overlay

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Lifecycle lens

Watch the plant change across development

Structure, function, and diagnostic context change with stage.

Stage 3 of 6Vegetative Growth

fan leavesnodesinternodesaxillary branchesexpanded root system

Interactive lenses

Read the same plant through different systems

Environment interaction mapPlant response comes from interacting conditions, not isolated numbers. Read the canopy, air, root zone, and recent change together.

Light / PPFDLeaf temperatureAir temperatureRelative humidityVPDAirflowCO₂Root-zone waterRoot oxygenpHEC

Overlay → lesson bridge

Turn a measurement or symptom location into the next useful lesson.

The overlay is a navigation layer, not a diagnosis. Follow the variable or location into plant physiology, then combine it with stage, history, and additional measurements.

EnvironmentOpen full environment system

Light / PPFDcanopyleaf_temperature · transpiration Leaf temperaturecanopyvpd · stomata Air temperatureairrh · vpd Relative humidityairvpd · transpiration VPDairstomata · water_uptake Airflowairleaf_temperature · transpiration CO₂airphotosynthesis · stomata Root-zone waterrootsroot_oxygen · water_uptake Root oxygenrootsroot_health · nutrient_uptake pHrootsnutrient_availability · root_health ECrootsosmotic_stress · nutrient_supply

Diagnostic locationOpen diagnostic system

Newest growthtopIs new growth pale, distorted, twisted, or stalled?Upper canopyupperIs damage strongest nearest the light source?Middle canopymiddleIs the pattern spreading upward or downward?Older / lower leaveslowerDid symptoms begin on the oldest leaves?One branch / sectorbranchIs the rest of the plant normal?Whole plantwholeWas onset sudden or gradual?Root zonerootsWhat is substrate moisture now and over the last cycle?

Open symptom differential library Practice diagnostic cases Record a real observation

Whole-plant curriculum

Explore every plant system

100 structured lessons

Selected learning system

Seed & Germination

Open full visual module

Distinguish the achene fruit wall from the true seed and embryo tissuesFollow imbibition, reserve mobilization, radicle emergence, and cotyledon establishmentSeparate germination percentage from germination rate and seed vigorConnect temperature, water potential, and salinity to germination response without treating one study as a universal thresholdInterpret aging and storage as interacting time, moisture, temperature, and seed-lot effectsEvaluate pericarp resistance and priming as context-dependent influences rather than guaranteed rescue methods

Lesson 1Open lesson

Seed anatomy

Distinguish the whole cannabis achene from the true seed and locate the pericarp, seed coat, residual peripheral endosperm, cotyledons, radicle, hypocotyl region, and plumule.

Lesson 2Open lesson

Imbibition

See how water uptake rehydrates seed tissues and restarts metabolic activity before visible germination.

Lesson 3Open lesson

Radicle emergence

Follow the radicle as the first root organ emerges and establishes the direction of early seedling growth.

Lesson 4Open lesson

Cotyledon transition

Track emergence from the seed shell through cotyledon opening and the first true leaves.

Lesson 5Open lesson

Germination failure patterns

Compare stalled seeds, damping-off risk, shell retention, excessive moisture, and temperature-related delays without assuming one cause from appearance alone.

Lesson 6Open lesson

Reserve mobilization

Follow stored lipids, proteins, and other seed reserves as germination restarts metabolism and supports embryo growth before expanding leaves become the dominant current carbon source.

Lesson 7Open lesson

Thermal limits & germination rate

Separate final germination percentage from the speed of germination, then use hemp seed studies to show how temperature can alter both while keeping published cardinal-temperature estimates specific to the tested cultivar, seed lot, and method.

Lesson 8Open lesson

Water potential, salinity & osmotic stress

Trace how reduced external water potential and dissolved salts can slow or suppress water uptake and emergence, while recognizing genotype, seed lot, salt composition, and experimental conditions as important sources of variation.

Lesson 9Open lesson

Seed vigor, aging & storage

Distinguish viability from vigor and connect storage time, seed moisture, temperature, dockage or contamination, and initial seed-lot quality to later germination performance instead of assigning one universal storage lifespan.

Lesson 10Open lesson

Pericarp resistance, priming & low-vigor germination

Compare intact and experimentally altered achenes to understand how the pericarp can contribute to poor emergence in some low-germinating lots and how priming may change speed or uniformity without being presented as a guaranteed treatment for every seed lot.