THC Plant Science Encyclopedia · THC-ENC-411

Harvest, Drying, Curing, and Storage Records

Preserve batch identity and measured conditions from harvest decision through drying, conditioning, storage, sampling, hold, and release.

Overview

Preserve batch identity and measured conditions from harvest decision through drying, conditioning, storage, sampling, hold, and release.

Evidence status: publication authorized, with independent specialist review still recorded separately. Treat ranges and causal claims as context-dependent unless the cited evidence establishes otherwise.

Core science

Postharvest records begin before the first cut. Link the harvest decision to crop identity, cultivar or line, field or room, flowering history, plant-health status, treatments, weather, maturity observations, assigned batch, tools, workers, and destination. Whole-plant, branch, wet-trim, dry-trim, and separated-flower workflows create different units and must retain labels through every transfer.

Drying records need load geometry and position as well as room averages. Record rack, line, height, incoming mass and form, sensor locations, air and product temperature, humidity, dew point, airflow or equipment state, mass change, moisture or water activity samples, inspection findings, interventions, and final transfer. Conditioning or curing records should define the process, starting material state, container, fill, headspace, openings or mixing, sampling, and acceptance evidence.

Storage records connect package, seal, product form, mass, environment, light, oxygen controls where used, excursions, retained samples, laboratory results, inventory movements, and disposition. A stem snap, jar humidity, calendar day, or one water-activity result is not a complete release decision. Suspect contamination, identity loss, or unexplained wetness requires hold and investigation.

Why this matters in cultivation

  • Use one event timeline and linked IDs so a reviewer can reconstruct who handled each batch, where it was, what conditions occurred, which samples represented it, and who authorized release.

Measure and record

Record 1

Link crop, plant, harvest, and sub-batch IDs to the harvest decision, approver, cut time, trim status, personnel, tools, sanitation, incoming mass, and transfer history.

Record 2

Record drying location, load map, sensor IDs, environmental data, airflow context, sample positions, moisture or water-activity method, mass change, defects, and any holds or deviations.

Record 3

Record conditioning or storage container, transfer times, temperature or humidity excursions, laboratory samples, retained samples, release decision, and final disposition so the complete postharvest chain can be reconstructed.

Common misconceptions

Misconception: A dry-room average describes every flower. Product temperature, airflow, density, position, and flower size can create substantial within-room variation.
Misconception: A fixed day count defines drying or curing completion. Time alone does not establish moisture distribution, water activity, chemical stability, or microbial risk.
Misconception: A passing COA erases missing batch identity or uncontrolled exposure. Analytical results cannot restore chain of identity or prove that unrecorded handling did not affect unsampled material.

Evidence limits and uncertainty

Postharvest specifications, testing requirements, storage conditions, remediation rules, and release authority vary by product, process, evidence base, and jurisdiction.

Measurements taken from a few locations or samples may not describe the full drying load or batch without a representative sampling plan.

Check your reasoning

  • For "Harvest, Drying, Curing, and Storage Records", which records are required to make the result traceable and decision-ready, and which missing field would most weaken the conclusion?
  • A learner claims, "A dry-room average describes every flower." Use the lesson’s science and evidence limits to explain why that claim is unreliable, then name one observation or measurement that could separate the competing explanations.
  • Applied case — Use one event timeline and linked IDs so a reviewer can reconstruct who handled each batch, where it was, what conditions occurred, which samples represented it, and who authorized release. Build a verification plan using the lesson’s record set (Crop/plant/harvest/sub-batch IDs; decision and approver; cut/trim/transfer times; personnel/tools/cleaning; incoming/final mass; drying location and load map; sensor data; moisture/aW method and sample map; defects/holds; conditioning/storage container; excursions; laboratory and retained samples; release/disposition.). What would you compare before and after the action, and what result would make you revise the original interpretation?
Try first, then compare your reasoning

Require lesson-specific evidence, not memorized universal targets. Open the rationales after you have written or discussed your own answer.

Answer rationale 1: Mechanism / workflow rationale
  • A strong answer should connect the response to the lesson objective: Preserve batch identity and measured conditions from harvest decision through drying, conditioning, storage, sampling, hold, and release.
  • Postharvest records begin before the first cut. Link the harvest decision to crop identity, cultivar or line, field or room, flowering history, plant-health status, treatments, weather, maturity observations, assigned batch, tools, workers, and destination. Whole-plant, branch, wet-trim, dry-trim, and separated-flower workflows create different units and must retain labels through every transfer.
  • Drying records need load geometry and position as well as room averages. Record rack, line, height, incoming mass and form, sensor locations, air and product temperature, humidity, dew point, airflow or equipment state, mass change, moisture or water activity samples, inspection findings, interventions, and final transfer. Conditioning or curing records should define the process, starting material state, container, fill, headspace, openings or mixing, sampling, and acceptance evidence.
  • The most useful verification evidence includes Link crop, plant, harvest, and sub-batch IDs to the harvest decision, approver, cut time, trim status, personnel, tools, sanitation, incoming mass, and transfer history..
  • Keep this limit explicit: Postharvest specifications, testing requirements, storage conditions, remediation rules, and release authority vary by product, process, evidence base, and jurisdiction.
Answer rationale 2: Misconception rationale
  • The shortcut is unreliable because the lesson explicitly teaches a more conditional explanation.
  • Representative misconception: A dry-room average describes every flower. Product temperature, airflow, density, position, and flower size can create substantial within-room variation.
  • Postharvest records begin before the first cut. Link the harvest decision to crop identity, cultivar or line, field or room, flowering history, plant-health status, treatments, weather, maturity observations, assigned batch, tools, workers, and destination. Whole-plant, branch, wet-trim, dry-trim, and separated-flower workflows create different units and must retain labels through every transfer.
  • A useful discriminator is Record drying location, load map, sensor IDs, environmental data, airflow context, sample positions, moisture or water-activity method, mass change, defects, and any holds or deviations..
  • Do not overextend the conclusion beyond this limit: Postharvest specifications, testing requirements, storage conditions, remediation rules, and release authority vary by product, process, evidence base, and jurisdiction.
Answer rationale 3: Applied verification rationale
  • In practice: Use one event timeline and linked IDs so a reviewer can reconstruct who handled each batch, where it was, what conditions occurred, which samples represented it, and who authorized release.
  • Record before action: Link crop, plant, harvest, and sub-batch IDs to the harvest decision, approver, cut time, trim status, personnel, tools, sanitation, incoming mass, and transfer history..
  • Also record: Record drying location, load map, sensor IDs, environmental data, airflow context, sample positions, moisture or water-activity method, mass change, defects, and any holds or deviations..
  • After the action, repeat the same measurement or observation so the comparison is valid.
  • Revise the interpretation if the result conflicts with the lesson limit or the expected response: Postharvest specifications, testing requirements, storage conditions, remediation rules, and release authority vary by product, process, evidence base, and jurisdiction.

Sources and evidence

  1. THC Cultivation SOP Source Materials Packet v1.0V21-SRC-002

    Project-controlled operational source map for measurement, records, safety, and QA boundaries.

    Internal controlled file

  2. ISO/IEC 17025:2017 — General requirements for the competence of testing and calibration laboratoriesV21-SRC-008

    Laboratory competence, impartiality, method control, equipment, traceability, sampling, reporting, and nonconforming work; standard text and current confirmation status require controlled access.

    Open source ↗

  3. JCGM 106 — The role of measurement uncertainty in conformity assessmentV21-SRC-019

    Decision rules, guard bands, acceptance limits, and uncertainty in pass/fail decisions.

    Open source ↗

  4. ASTM Committee D37 on CannabisV21-SRC-020

    Current consensus standards and work items for cannabis sampling, testing, quality, security, and processing; exact edition and applicability must be verified.

    Open source ↗

  5. ASTM and instrument-manufacturer water-activity method controlsV21-SRC-023

    Sample equilibration, instrument verification, temperature, cleanliness, and device-specific limitations.

    Open source ↗

  6. THC Cannabis Encyclopedia Volumes 01–20 controlled manuscriptsV21-SRC-033

    Internal examples of morphology, environment, irrigation, diagnostic, postharvest, breeding, and evidence-limit records.

    Internal controlled collection

Downloads

No lesson-specific download is approved for this release. Use browser print/save-to-PDF when you need an offline reading copy.