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Grow Records & Diagnostic Worksheets

Teaching Healthy Cultivation · Evidence Records

Grow Records & Diagnostic Worksheets

Record what happened before deciding why it happened. These worksheets turn the Diagnostic Case Lab method into a repeatable evidence trail you can use at the plant, in a grow log, or on paper.

10 worksheets70 evidence fields10 verification checksPrint-friendly
Open worksheetsPractice Case LabDiagnostic Index

Record method

Make your diagnosis reproducible.

A good record allows another person—or future you—to see what was observed, how it was measured, what alternatives were considered, what changed, and whether the result supported the original interpretation.

1

Observe

Describe the change before naming a cause.

2

Measure

Preserve units, location, time and method.

3

Compare

Keep competing explanations until evidence separates them.

4

Verify

Repeat the same observation after the smallest justified change.

Printable evidence kit

Ten records for one complete diagnostic trail.

Use only the sheets relevant to the case. Printing this page produces one worksheet per page while hiding the navigation sections.

DR-01Worksheet 1 of 10

Diagnostic Intake Record

Capture the minimum whole-case context before assigning a cause.

Plant or batch IDUse a stable identifier that connects photos, samples and follow-up notes.

Cultivar / source / lotRecord the supplied identity and source without treating the name as proof of genetics.

Plant stageSeedling, vegetative, transition, flowering, maturation, drying or other defined stage.

First symptom dateRecord when the change was first noticed, not when a diagnosis was guessed.

Primary affected organLeaf, root, stem, meristem, flower, seedling collar or postharvest material.

One-sentence neutral descriptionDescribe color, shape, distribution and progression without naming the cause.

Urgency / crop impactNote whether the issue is localized, spreading, severe, reproductive, or a possible safety/quality concern.

Verification question

Can another grower understand what changed without seeing your proposed diagnosis?

□ Yes    □ No    □ Unresolved / needs more evidence
DR-02Worksheet 2 of 10

Symptom Distribution Map

Describe where symptoms occur so location becomes diagnostic evidence.

Old vs new growthMark whether symptoms begin on older, middle, newest or all growth.

Canopy positionTop, middle, lower, edge, interior, shaded or directly illuminated zone.

Plant distributionSingle plant, cultivar group, irrigation zone, room edge, entire crop or random plants.

Tissue patternUniform, interveinal, marginal, tip-first, spots, lesions, stippling, distortion or wilting.

Progression directionStable, spreading upward/downward, expanding from a point, or appearing on new sites.

Photo set IDsRecord whole-plant, affected-tissue and comparison-plant photo identifiers.

Unaffected comparisonIdentify a nearby healthy comparison plant or tissue and how it differs.

Verification question

Does the mapped pattern support more than one plausible cause? Keep those alternatives open.

□ Yes    □ No    □ Unresolved / needs more evidence
DR-03Worksheet 3 of 10

Environment Snapshot

Record the environment where the affected tissue actually exists, not only a room average.

Air temperature + sensor locationInclude units, canopy height and distance from the affected zone.

Relative humidity + sensor locationRecord units/location and whether the value is instantaneous, minimum, maximum or average.

Leaf or surface temperatureIf measured, record method and location; do not substitute air temperature silently.

Light measurementRecord PPFD or other light metric, units, instrument and canopy position when relevant.

Air movement / exposureNote still zones, direct fan exposure, outdoor wind or obvious airflow differences.

Recent environment eventHeat spike, cold period, humidity excursion, power outage, rain, wind or equipment change.

Comparison-zone readingsRecord the same measurements in an unaffected or reference zone when possible.

Verification question

Are the measurements from the plant zone that shows the problem, with units and locations preserved?

□ Yes    □ No    □ Unresolved / needs more evidence
DR-04Worksheet 4 of 10

Irrigation & Root-Zone Record

Separate water-balance, aeration, salinity and root-condition evidence from leaf appearance.

Last irrigation time / volumeRecord when and how much water or solution was applied.

Pre-irrigation substrate conditionContainer mass, moisture sensor, visual/tactile state or other repeatable method.

Drainage / runoff behaviorRecord whether drainage changed, pooled, slowed or differed among containers.

pH sample + methodRecord the actual sample type, collection method, value and meter status.

EC sample + methodRecord units and whether it is source, feed, drain, runoff, extract or another defined sample.

Root appearanceColor, texture, odor, distribution and whether findings are representative or from one root.

Root-zone temperature / oxygen contextRecord temperature and saturation/oxygenation clues where relevant.

Verification question

Could another person reproduce your pH, EC and moisture measurements from the method notes?

□ Yes    □ No    □ Unresolved / needs more evidence
DR-05Worksheet 5 of 10

Nutrition & Input History

Document what actually entered the system before calling a symptom a deficiency or toxicity.

Base nutrient / recipe IDUse the exact batch or recipe identifier rather than a remembered product name alone.

Mix date and operatorConnect the symptom window to a traceable preparation event.

Measured feed EC / concentrationRecord units and measurement method.

Measured feed pHRecord value after mixing and note calibration/check status.

Water source / analysis changesMunicipal, well, RO, blend or other source; note any recent source change.

Additives / foliar / amendmentsRecord all recent additions, including sprays and substrate amendments.

Known mixing error or omissionDocument verified mistakes separately from suspected nutrient explanations.

Verification question

Is there a documented input change that separates one nutrient hypothesis from its look-alikes?

□ Yes    □ No    □ Unresolved / needs more evidence
DR-06Worksheet 6 of 10

Pest & Disease Scouting Record

Pair symptom patterns with direct organism, lesion and crop-distribution evidence.

Scouting route / zoneUse a repeatable route or mapped crop zone so counts can be compared over time.

Plants / leaves / traps inspectedRecord the sampling unit instead of a bare pest count.

Direct organisms or structuresLive pests, eggs, cast skins, webbing, spores, colonies, decay or other direct evidence.

Magnification / identification methodRecord hand lens, microscope, lab test or other method when identification depends on it.

Lesion / feeding patternStippling, chewing, honeydew, powdery colony, internal rot, root decay or other defined sign.

Beneficial organisms / controls presentRecord predators, parasitoids, biologicals or other controls that affect interpretation of counts.

Trend since last scoutIncreasing, stable, decreasing, newly detected or unresolved; include comparable counts where possible.

Verification question

Do you have direct evidence of an organism or disease process, or only a plant response that could have other causes?

□ Yes    □ No    □ Unresolved / needs more evidence
DR-07Worksheet 7 of 10

Propagation & Plant Identity Record

Preserve lineage and propagation context when establishment or systemic problems are possible.

Mother / seed lot / source IDKeep the upstream source connected to every downstream plant or clone batch.

Propagation batch dateRecord cutting, sowing, transplant or receipt date as applicable.

Cutting / seed treatmentRecord preparation, rooting treatment or germination method without assuming it caused the outcome.

Rooting / germination outcomeUse defined counts, time-to-event or root-quality observations.

Shared tools / water / work areaNote connections that could distribute pests, pathogens or process errors.

Prior test resultsRecord HLVd or other lab results with date, sample identity and laboratory/method where available.

Related plants showing same patternMap whether siblings, clones or a source plant share the issue.

Verification question

Can you trace this plant backward to its source and forward to every connected clone or batch?

□ Yes    □ No    □ Unresolved / needs more evidence
DR-08Worksheet 8 of 10

Recent Change Timeline

Find cause candidates by aligning symptom onset with documented system changes.

Lighting changesIntensity, fixture height, photoperiod, spectrum or equipment replacement.

Irrigation changesFrequency, volume, emitter, drainage, dryback strategy or water source.

Nutrition changesRecipe, concentration, pH management, amendment or supplement changes.

Environment changesTemperature/RH control, fan position, ventilation, weather or enclosure changes.

Plant handling changesTransplant, pruning, training, spraying, cleaning, moving or mechanical injury.

New plant / genetics introductionRecord incoming material, quarantine status and integration date.

Symptom timing relative to changesWrite which changes occurred before, during or after symptom onset.

Verification question

Which recent change has a biologically plausible timing and distribution, and what evidence would disprove it?

□ Yes    □ No    □ Unresolved / needs more evidence
DR-09Worksheet 9 of 10

Intervention & One-Change Log

Make corrective actions testable instead of stacking several changes and losing causal information.

Working interpretationState the current best-supported explanation and confidence level.

Competing explanation kept openRecord at least one plausible alternative that could explain the same symptom.

Chosen interventionDescribe the smallest justified change or containment action.

Why this action was chosenConnect the action directly to evidence, not just a product recommendation.

Date / time / crop zoneMake the action traceable to the affected plants and observation interval.

Variables intentionally held constantList important factors left unchanged so follow-up evidence remains interpretable.

Expected observable responseDefine what should change if the working interpretation is useful.

Verification question

If the plant improves, will the record tell you which change likely mattered?

□ Yes    □ No    □ Unresolved / needs more evidence
DR-10Worksheet 10 of 10

Follow-Up Verification & Case Closeout

Decide whether the interpretation survived follow-up evidence and preserve what was learned.

Follow-up date / intervalRecord when the crop was rechecked relative to the intervention.

New growth / new tissue responsePrioritize newly produced tissue when old damage cannot reverse.

Symptom incidence / progressionNew cases, stable area, reduced spread, continued spread or resolved pattern.

Repeat measurementsRecord the same pH, EC, moisture, environment, pest-count or other method used initially.

Interpretation statusSupported, weakened, rejected, unresolved or replaced by a better explanation.

Escalation / testing neededMicroscopy, laboratory test, tissue/water analysis, professional diagnosis or additional controlled observation.

Case lesson / prevention changeWrite the process change, baseline or monitoring improvement that should carry into the next crop.

Verification question

Did the follow-up test the original interpretation, or only document that time passed?

□ Yes    □ No    □ Unresolved / needs more evidence

Evidence boundary

Record facts separately from interpretations.

A record improves diagnosis only when observations are separated from interpretations. Preserve units, sample location, time, plant stage, recent changes and uncertainty. A completed worksheet does not by itself confirm a pest, pathogen, nutrient deficiency or environmental disorder.

Use the records with the science

Jump from the worksheet to the right reference.

These links connect the records to the live diagnostic, measurement and plant-health curriculum.

Diagnostic Case Lab →Diagnostic Index →Evidence & Measurement →Plant Health & IPM →Water, pH & EC →Nutrition & Media →Environment & VPD →Grow Doc →