POSH STAR LAB / RESEARCH LIBRARY

Research
Library.

Hash, live hash rosin and the science of trichomes. A reading room for clear definitions, thoughtful comparisons and evidence you can follow.

28 articles · English edition · Foundations to research literacy
EXPLORE THE RESEARCH LIBRARY

Latest research & education

Read the newest research articles first. Study dates and evidence types are stated inside each article.

28 articles

  1. 01
    Evidence

    Why moisture results need a method, not just a percentage

    A 2025 NIST interlaboratory study explains why moisture measurements need method context before two reports can be compared.

    Read article: Why moisture results need a method, not just a percentage
  2. 02
    Trichome biology

    When preparation changes the trichome image

    How a 2022/2023 electron-microscopy study separates biological structure from preparation artifacts.

    Read article: When preparation changes the trichome image
  3. 03
    Evidence

    Why a validated test needs a named sample type

    Official Health Canada guidance explains why analytical validation is tied to intended use and sample matrix.

    Read article: Why a validated test needs a named sample type
  4. 04
    Trichome biology

    Naming the trichome: a new classification proposal, carefully read

    A 2026 study separates glandular and non-glandular trichomes into four proposed groups. Learn what the terminology clarifies and where the evidence stops.

    Read article: Naming the trichome: a new classification proposal, carefully read
  5. 05
    Terpene science

    Monoterpenes, explained: the chemistry behind the profile

    Learn the difference between monoterpenes, oxygenated terpenoids and sesquiterpenes, then follow the evidence into sleep, alertness and inflammation research.

    Read article: Monoterpenes, explained: the chemistry behind the profile
  6. 06
    Terpene science

    How to read a terpene profile without guessing its effects

    Understand concentration, percentages, tested panels and sample identity—and why a dominant terpene does not establish a sleep or energy effect.

    Read article: How to read a terpene profile without guessing its effects
  7. 07
    Terpene science

    Terpenes and sleep: what human trials can actually tell us

    A measured look at linalool, myrcene, lavender and a CBD–terpene formulation, with clear limits on claims about insomnia or finished cannabis products.

    Read article: Terpenes and sleep: what human trials can actually tell us
  8. 08
    Terpene science

    Alertness, calm and terpenes: separate the questions

    Examine rosemary–cineole cognition research and a controlled limonene–THC trial without confusing reduced anxiety with increased energy.

    Read article: Alertness, calm and terpenes: separate the questions
  9. 09
    Terpene science

    Terpenes and inflammation: from CB2 biology to clinical evidence

    Compare β-caryophyllene experiments with a 2025 clinical trial of a defined terpene medicine, and understand why neither proves rosin treats inflammation.

    Read article: Terpenes and inflammation: from CB2 biology to clinical evidence
  10. 10
    Terpene science

    Research watch 2026: terpene exposure is not a benefit score

    A CDC-authored analysis of human serum shows why detecting pinene or limonene does not reveal the source of exposure or prove a health benefit.

    Read article: Research watch 2026: terpene exposure is not a benefit score
  11. 11
    Terpene science

    Mirror-image terpenes: what a profile can leave unresolved

    Learn why terpene identity includes molecular handedness, what a 2024/2025 cannabis analysis found, and why a profile cannot establish clinical effects.

    Read article: Mirror-image terpenes: what a profile can leave unresolved
  12. 12
    Research note

    Beyond potency: giving cannabis aroma a shared vocabulary

    How a published aroma lexicon helps distinguish sensory descriptions from chemical measurements, and why flower findings need careful context for rosin.

    Read article: Beyond potency: giving cannabis aroma a shared vocabulary
  13. 13
    Research note

    Same lineage, different aroma: what a five-sample study reveals

    A closer look at published analysis of five ice-water hash rosin samples and the limits of predicting aroma from shared lineage.

    Read article: Same lineage, different aroma: what a five-sample study reveals
  14. 14
    Evidence

    Behind the number: why laboratory reference materials matter

    Understand the role of NIST hemp reference material in measurement quality, and why a reference material is not a certification of a commercial batch.

    Read article: Behind the number: why laboratory reference materials matter
  15. 15
    Trichome biology

    Inside a trichome: the secretory supercell

    A 2022 microscopy study reveals connected secretory cells and specialised organisation inside cannabis glandular trichomes.

    Read article: Inside a trichome: the secretory supercell
  16. 16
    Trichome biology

    How trichomes make room for resin

    What a 2021 cell-wall study tells us about the extracellular storage cavity inside cannabis glandular trichomes.

    Read article: How trichomes make room for resin
  17. 17
    Beyond the surface

    Double heads. Bigger questions. Reading Shwale’s trichome observations

    Explore Shwale’s multi-gland trichome observations, the tomato study he cites, and the distinction between an intriguing image and a tested conclusion.

    Read article: Double heads. Bigger questions. Reading Shwale’s trichome observations
  18. 18
    Trichome biology

    Why we look closer: macro imaging, trichome glands and the whole plant

    Why POSH STAR LAB studies trichome glands and the whole plant: what macro imaging reveals about structure, development and condition, and what needs testing.

    Read article: Why we look closer: macro imaging, trichome glands and the whole plant
  19. 19
    Methods explained

    Solventless methods explained: dry sift, ice-water hash and rosin

    A conceptual comparison of dry sift, ice-water hash and rosin, explaining the method families and how they relate to live hash rosin terminology.

    Read article: Solventless methods explained: dry sift, ice-water hash and rosin
  20. 20
    Source guide

    From the feed to the footnote: a better way to learn solventless science

    A reading guide to Shwale, Herb.co, scientific publishers and official agencies, showing which questions each kind of source can answer.

    Read article: From the feed to the footnote: a better way to learn solventless science
  21. 21
    Foundations

    What is hash? Resin, kief and hashish explained

    A beginner’s guide to hash, kief and plant resin, with clear definitions and a checklist for reading cannabis terminology.

    Read article: What is hash? Resin, kief and hashish explained
  22. 22
    Plant science

    What are trichomes? The biology behind cannabis resin

    Understand glandular trichomes, secretory cells and resin storage, with summaries of peer-reviewed cannabis microscopy research.

    Read article: What are trichomes? The biology behind cannabis resin
  23. 23
    Terminology

    What does solventless mean? Understanding the claim

    Learn what solventless describes, how it differs from solvent-free language, and why a process label cannot replace batch evidence.

    Read article: What does solventless mean? Understanding the claim
  24. 24
    Comparison

    Live hash rosin vs live resin: what the names mean

    Compare live hash rosin, hash rosin and live resin terminology without confusing source material, process category and quality claims.

    Read article: Live hash rosin vs live resin: what the names mean
  25. 25
    Measurement

    5, 15 and 25 microns: reading hash and rosin terminology

    What 5 µm, 15 µm and 25 µm mean as measurements, and why a micron number alone does not establish hash or rosin quality.

    Read article: 5, 15 and 25 microns: reading hash and rosin terminology
  26. 26
    Research note

    Cannabis aroma beyond terpenes: what research shows

    A source-led look at nonterpenoid aroma research, sensory vocabulary and the limits of flavour claims in cannabis collection records.

    Read article: Cannabis aroma beyond terpenes: what research shows
  27. 27
    Evidence

    How to read a cannabis certificate of analysis

    A practical reading checklist for cannabis COAs: sample identity, units, reporting limits, testing scope and the limits of a pass result.

    Read article: How to read a cannabis certificate of analysis
  28. 28
    Editorial method

    How to read solventless research and compare claims

    Learn to distinguish original research, literature summaries, sensory notes and marketing claims when reading about solventless cannabis.

    Read article: How to read solventless research and compare claims
NEW / TERPENE SCIENCE

Beyond the aroma.
Follow the evidence.

Six new guides: monoterpenes, chemical profiles, sleep, alertness, inflammation and a 2026 research watch. Human findings and preclinical evidence, clearly separated.

Explore terpene science
01 / UNDERSTAND

Methods, explained.

Dry sift, ice-water hash and rosin: the concepts behind the names.

02 / LOOK CLOSER

Read the image.

What a macro photograph reveals—and what requires measurement.

03 / FOLLOW THE EVIDENCE

Go to the source.

Breeder observations, Herb.co, original papers and official agencies.

NEW SERIES / BEYOND THE SURFACE

Double heads.
Bigger questions.

Shwale’s multi-gland observations open a deeper conversation about trichome structure, chemistry and evidence.

Read the Shwale featureExplore the science of the image
POSH STAR LAB PBQ flower photograph
POSH STAR LAB / PBQ archive photograph. Not an image of the multi-gland observation discussed in the feature.
START HERE

Learn the language.
Then question the claim.

Begin with hash and trichomes, compare the terminology, then learn to read micron measurements and laboratory evidence.

Start with hash
THE SOURCE DESK

Follow the evidence.

Different sources answer different questions. These references do not imply affiliation or endorsement.

Editorial reading

Herb.co

An accessible trichome explainer; scientific claims need primary evidence.

Research literature

Plants

Questions of sampling and comparability in trichome density.

Measurement science

NIST

Reference materials, analytical methods and laboratory quality assurance.

Public-agency definitions

Health Canada

Definitions and categories used in our foundational articles.

THE MASTER CRAFTER’S HANDBOOK

The POSH STAR reference.
Now ready to read.

19 pages of botanical science, terpene chemistry, genetic identity and documentary quality.

Read & download the handbook