{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.helianthus-tuberosus","code":"thing-q146190","url":"https://ver.cy/models/thing/q146190/","name":"Helianthus tuberosus","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.LIV"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"Helianthus tuberosus L. is a perennial, typically hexaploid sunflower (Asteraceae) native to central and eastern North America, propagated by knobbly stem tubers that store carbohydrate as inulin rather than starch, and grown or naturalized as a vegetable, forage, and industrial fructan crop.","purpose":"Enable an agent to recognise Helianthus tuberosus, assess its seasonal and physical condition, and decide whether to cultivate, propagate, harvest, retain or contain it.","scope":{"in":["Identification evidence for plants and detached tubers, including unresolved sunflower lookalikes","Cultivar or accession provenance and relationships among shoots, underground organs and stands","Seasonal development, tuber formation and persistence between growing seasons","Site response, plant damage and tuber condition","Propagation, harvest readiness and the disposition of remaining viable material","Spread beyond intended boundaries and evidence of containment"],"out":["General sunflower taxonomy and independently identified neighbouring species","Soil, weather and hydrological systems beyond their observed effects on this plant","Farm operations, equipment and commercial crop accounting","Recipes, processed foods and individual dietary or medical advice","Jurisdiction-wide invasive-species policy and ecosystem management plans"],"boundaries":[]},"distinguishingFeatures":["Against annual sunflower, inspect underground connections for tubers and document seasonal regrowth; yellow flower heads alone do not establish identity. Tuber propagation and recurrence are documented by the [RHS growing guide](https://www.rhs.org.uk/vegetables/jerusalem-artichokes/grow-your-own).","Against similar perennial Helianthus, apply a botanical key to a combination of petioles, leaf shape and width, and late-season tuber production; the [Flora of North America key](https://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=114871) uses these characters together.","Against globe artichoke, establish whether the observed plant bears sunflower-like heads and underground tubers; the shared common name is insufficient identification evidence. See the [RHS growing guide](https://www.rhs.org.uk/vegetables/jerusalem-artichokes/grow-your-own).","Against other perennial sunflowers or suspected hybrids, retain an unresolved identification when characters conflict; [Flora of North America](https://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200024006) reports variation and probable hybridization in H. tuberosus.","For loose produce confused with potato or ginger, require diagnostic examination or traceability to an identified parent plant; a knobbly outline or market label alone does not pass the identification test."],"structure":{"bundles":[{"id":"identity-and-material-boundaries","name":"Identity and material boundaries","description":"Establish what has been identified and which biological material the record represents.","layers":[{"id":"diagnostic-evidence","name":"Diagnostic evidence","description":"Connect a species determination to inspectable plant characters.","findings":[{"id":"sunflower-identification-basis","name":"Sunflower identification basis","description":"Record the character combination, reference and observer supporting the determination.","questions":[{"text":"Which leaf, petiole, flower-head and underground characters support H. tuberosus over the locally plausible Helianthus alternatives?","id":"sunflower-identification-basis-q01","kind":"definition"},{"text":"Which botanical key, specimen images or expert determination supports the identification?","id":"sunflower-identification-basis-q02","kind":"provenance"},{"text":"What missing or conflicting characters require the identification to remain provisional?","id":"sunflower-identification-basis-q03","kind":"boundary"}]}]},{"id":"plant-and-tuber-attribution","name":"Plant and tuber attribution","description":"Separate observed connections from assumptions about clones and harvested material.","findings":[{"id":"biological-unit-and-lineage","name":"Biological unit and lineage","description":"Specify whether the record describes a shoot, connected growth, stand or detached tuber material.","questions":[{"text":"Does this record represent one shoot, demonstrably connected growth, an inferred clone, a stand or a tuber lot?","id":"biological-unit-and-lineage-q01","kind":"boundary"},{"text":"What evidence links detached tubers and any cultivar label to the identified parent material?","id":"biological-unit-and-lineage-q02","kind":"provenance"}]}]}]},{"id":"seasonal-growth-and-tuber-renewal","name":"Seasonal growth and tuber renewal","description":"Track aboveground development separately from underground production and survival.","layers":[{"id":"local-development-sequence","name":"Local development sequence","description":"Build a dated account of emergence, flowering, senescence and tuber development.","findings":[{"id":"shoot-and-tuber-stage","name":"Shoot and tuber stage","description":"Require direct evidence for underground development rather than using flower or shoot stage alone.","questions":[{"text":"When were emergence, flowering and shoot senescence observed for this accession at this site?","id":"shoot-and-tuber-stage-q01","kind":"measurement"},{"text":"What sampled underground observations establish whether tubers are absent, initiating or enlarging?","id":"shoot-and-tuber-stage-q02","kind":"measurement"}]}]},{"id":"renewal-potential","name":"Renewal potential","description":"Assess whether retained or detached material can produce subsequent growth.","findings":[{"id":"dormancy-and-regrowth-evidence","name":"Dormancy and regrowth evidence","description":"Separate apparent inactivity, suspected viability and observed sprouting.","questions":[{"text":"Which observations distinguish dormant tubers from damaged material of uncertain viability?","id":"dormancy-and-regrowth-evidence-q01","kind":"definition"},{"text":"What sprouting observations or specified tests support retaining these tubers for propagation?","id":"dormancy-and-regrowth-evidence-q02","kind":"action"}]}]}]},{"id":"site-response-and-plant-condition","name":"Site response and plant condition","description":"Interpret growth, structural damage and underground condition in their local setting.","layers":[{"id":"water-and-stem-exposure","name":"Water and stem exposure","description":"Relate water availability and wind exposure to the observed crop.","findings":[{"id":"site-stress-response","name":"Site stress response","description":"Record moisture conditions, growth response and lodging. Waterlogging and exposed stems are relevant cultivation concerns in the [RHS plant profile](https://www.rhs.org.uk/plants/76796/helianthus-tuberosus/details).","questions":[{"text":"What soil-moisture or drainage observations coincide with reduced growth or affected tubers?","id":"site-stress-response-q01","kind":"measurement"},{"text":"How many stems have lodged or broken, and does their distribution support adding support or changing exposure?","id":"site-stress-response-q02","kind":"action"}]}]},{"id":"organ-specific-damage","name":"Organ-specific damage","description":"Locate and quantify symptoms on shoots, leaves and tubers.","findings":[{"id":"damage-and-diagnostic-confidence","name":"Damage and diagnostic confidence","description":"Keep symptom records distinct from pathogen or pest attribution; the [RHS plant profile](https://www.rhs.org.uk/plants/76796/helianthus-tuberosus/details) identifies several possible pests and diseases.","questions":[{"text":"Which organs show feeding damage, lesions, discoloration or decay, and what proportion of the sample is affected?","id":"damage-and-diagnostic-confidence-q01","kind":"measurement"},{"text":"What examination or diagnostic result supports the proposed cause rather than a visual guess?","id":"damage-and-diagnostic-confidence-q02","kind":"provenance"},{"text":"Which affected material should be separated pending a decision about propagation or harvest use?","id":"damage-and-diagnostic-confidence-q03","kind":"action"}]}]}]},{"id":"harvest-and-tuber-disposition","name":"Harvest and tuber disposition","description":"Connect lifting decisions to observed tuber development, intended use and subsequent condition.","layers":[{"id":"lifting-readiness-and-recovery","name":"Lifting readiness and recovery","description":"Assess the harvestable material and define what was actually recovered.","findings":[{"id":"harvest-decision-basis","name":"Harvest decision basis","description":"Use sampled tuber condition and the intended outcome to support timing and harvest extent.","questions":[{"text":"What sampled tuber size, condition and local seasonal evidence support lifting now for the intended use?","id":"harvest-decision-basis-q01","kind":"action"},{"text":"What fresh mass and count were recovered from the stated area, and what material was intentionally retained?","id":"harvest-decision-basis-q02","kind":"measurement"}]}]},{"id":"detached-tuber-condition","name":"Detached tuber condition","description":"Track deterioration, sprouting and handling after lifting.","findings":[{"id":"use-specific-tuber-routing","name":"Use-specific tuber routing","description":"Maintain condition and handling evidence for decisions among planting, further storage, food-use assessment and disposal.","questions":[{"text":"How have firmness, mass loss, wounds, decay and sprouting changed since lifting?","id":"use-specific-tuber-routing-q01","kind":"measurement"},{"text":"What harvest date, handling conditions and treatment history accompany this tuber lot?","id":"use-specific-tuber-routing-q02","kind":"provenance"},{"text":"What evidence and neighbouring-model checks are required before routing this lot to planting, food use or disposal?","id":"use-specific-tuber-routing-q03","kind":"action"}]}]}]},{"id":"spread-and-containment","name":"Spread and containment","description":"Track unwanted occupancy and the fate of potentially viable material.","layers":[{"id":"occupancy-and-escape","name":"Occupancy and escape","description":"Compare observed growth with the intended planting boundary.","findings":[{"id":"stand-expansion-evidence","name":"Stand expansion evidence","description":"Separate mapped emergence from unverified claims about its route of origin.","questions":[{"text":"Where are shoots emerging relative to the previous stand edge and the intended cultivation boundary?","id":"stand-expansion-evidence-q01","kind":"measurement"},{"text":"What evidence attributes outlying growth to underground extension, moved tubers or another route?","id":"stand-expansion-evidence-q02","kind":"provenance"}]}]},{"id":"removal-and-follow-up","name":"Removal and follow-up","description":"Evaluate interventions against later emergence and material movement.","findings":[{"id":"containment-completion-evidence","name":"Containment completion evidence","description":"Record where removed material went and what subsequent observations support the outcome.","questions":[{"text":"How will excavated tubers and soil be handled to avoid unintentionally establishing another stand?","id":"containment-completion-evidence-q01","kind":"action"},{"text":"What emergence was recorded after each removal intervention and during the following growth period?","id":"containment-completion-evidence-q02","kind":"measurement"},{"text":"What locally justified monitoring duration and search coverage are required before declaring containment complete?","id":"containment-completion-evidence-q03","kind":"boundary"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-kinds","name":"Kinds and varieties","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these kinds and varieties hold for the sense of Helianthus tuberosus this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of Helianthus tuberosus this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-standards-and-regulation","name":"Standards and regulation","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these standards and regulation hold for the sense of Helianthus tuberosus this model covers, and on what evidence?","id":"evidence-standards-and-regulation-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these real-world use hold for the sense of Helianthus tuberosus this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these typical measurements hold for the sense of Helianthus tuberosus this model covers, and on what evidence?","id":"evidence-measurements-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of Helianthus tuberosus this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-regional-variation","name":"Regional variation","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these regional variation hold for the sense of Helianthus tuberosus this model covers, and on what evidence?","id":"evidence-regional-variation-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of Helianthus tuberosus this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe the plant, its tubers and cultivation from botanical and horticultural sources.","Help a grower plan planting, harvest and control of spread on their own land."],"mustNot":["Plant it where it is listed as invasive or banned from release.","Present it as a cure for diabetes or other diseases.","Dump tubers or plant waste in the wild where they can take root."],"requiresHuman":["Planting it in a natural area or on land the agent does not control."]},"ethics":{"considerations":["It spreads readily from tuber fragments and can crowd out native plants.","Its inulin-rich tubers cause digestive discomfort for some people, which should be stated honestly."],"affectedParties":["Gardeners and farmers","Native plant communities","People who eat it"]},"owners":{"steward":"The grower on whose land it is planted; wild stands fall under local land managers.","roles":[],"masterSystems":["Plant name and taxonomy databases"]},"relations":[{"target":"Q11992872","type":"parent","note":"registry parent class"},{"target":"Q157957","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.helianthus-tuberosus","Wikidata: Q146190 (https://www.wikidata.org/wiki/Q146190)"]},"properties":{"applicability":"required","items":["Identification confidence: unassessed | provisional | corroborated | conflicting","Observation unit: shoot | connected plant portion | inferred clone | stand | detached tuber | tuber lot","Cultivar or accession attribution: named cultivar or accession linked to supplier, parent material and supporting evidence; unknown permitted","Leaf and petiole characters: leaf length, leaf width and petiole length in mm, with stem position and photographs","Underground organ connection: observed connection between shoot, rhizome and tuber | inferred connection | detached | unexamined","Seasonal development: dated shoot stage, flowering stage, tuber-development stage and dormancy assessment recorded separately","Stand extent and density: occupied area in m², shoots per m² and distance beyond intended boundary in m","Stem height and lodging: height in cm; percentage of sampled stems leaning, broken or fallen","Tuber harvest quantity: fresh mass in kg and tuber count per explicitly bounded harvest unit","Tuber condition: firmness, shrivelling, wounds, visible decay and sprouting, each dated and assessed separately","Tuber viability evidence: untested | potentially viable | sprouting observed | failed specified viability test","Exposure and treatment provenance: links to growing location, applied treatments, handling events and relevant test results"]},"recognition":{"applicability":"required","items":["Tall plants with rough leaves and small yellow sunflower-like heads in late summer.","Knobbly, irregular tubers, pale brown to red, at the base of the stems."]},"capabilities":{"applicability":"required","items":["Document diagnostic characters and seek expert determination when sunflower identities conflict","Map shoots and inspect underground connections to estimate stand boundaries and persistence","Select attributable tubers for propagation after assessing condition and destination suitability","Adjust watering, drainage or support using observed plant and site conditions","Lift, weigh, inspect and route tubers according to intended use and recorded condition","Remove unwanted growth and monitor subsequent emergence before declaring containment successful"]},"hazards":{"applicability":"required","items":["Escapes from cultivation and forms dense stands that are hard to remove.","Eating large amounts can cause bloating and gas."]},"interfaces":{"applicability":"required","items":["The International Code of Nomenclature for algae, fungi, and plants, adopted by the International Botanical Congress, governs the scientific naming of this species."]},"context":{"applicability":"required","items":["This perennial sunflower is cultivated in gardens and agricultural fields for its underground tubers, forage and inulin production.","It also occurs in naturalized stands along disturbed ground, field margins and waterways.","Management concerns include seasonal growth, persistence through underground tubers and spread beyond intended planting areas."]}},"sources":[{"title":"Biology and Chemistry of Jerusalem Artichoke: Helianthus tuberosus L.","url":"","note":"Species identity, tuber chemistry (inulin), agronomy, cultivar groups, and crop uses."},{"title":"PLANTS Database: Helianthus tuberosus L.","url":"https://plants.usda.gov/home/plantProfile?symbol=HETU","note":"Accepted scientific name, USDA plant symbol HETU, native North American range, and growth habit."},{"title":"Plants of the World Online: Helianthus tuberosus L.","url":"","note":"Current taxonomic acceptance of the Linnaean name and native versus introduced distribution."},{"title":"Species Plantarum","url":"","note":"Original publication of Helianthus tuberosus L. (1753)."},{"title":"EPPO Global Database: Helianthus tuberosus (HELTU)","url":"https://gd.eppo.int/taxon/HELTU","note":"EPPO code HELTU and the plant's status as a cultivated and widely naturalized species."},{"title":"Wikidata item Q146190: Helianthus tuberosus","url":"https://www.wikidata.org/wiki/Q146190","note":"identity and sense of the item"},{"title":"Wikipedia: Jerusalem artichoke","url":"https://en.wikipedia.org/wiki/Jerusalem_artichoke","note":"general description of the item"}],"openQuestions":["Which regional identification key and expert review criteria adequately distinguish local H. tuberosus material from similar perennial sunflowers and hybrids, especially without flowers or developed tubers?","How do accession, latitude and local growing conditions alter tuber initiation, maturity and the relationship between flowering and harvest readiness?","Which validated condition and storage thresholds should govern retention of tubers for propagation versus referral for food-use assessment?","What local evidence establishes the contributions of underground spread, displaced tubers and seed recruitment to new stands?","Which containment methods, monitoring intervals and destination restrictions apply at the actual site, and what evidence is sufficient to declare control successful?"],"resources":{"spec":"/models/things/publications/thing-q146190/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q146190/spec.json"],"providers":["Codex","Grok"],"researchStatus":"unreviewed","generatedAt":"2026-09-07T14:21:28Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:26+00:00: completeness 1.00; sense: Wikidata description; 4 live sources; review by codex: pass"},"score":1.0}}