{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.dahlia","code":"thing-q130918","url":"https://ver.cy/models/thing/q130918/","name":"Dahlia","alternateNames":["Ball Dahlias","Cactus Dahlias","Collerette Dahlias","Decorative Dahlias","Group 7 Pompon","Group 9 Semi-cactus","Group 13 Double Orchid","Group 1 Single","Group 4 Waterlily","Group 10 Miscellaneous","Group 12 Single Orchid","Group 11 Fimbriated"],"kind":"thing","status":"published","version":"0.2.0-wave.2","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.LIV"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A genus of bushy, tuberous, herbaceous perennial plants native to Mexico and Central America, national flower of Mexico, cultivated worldwide for their showy flowers in thousands of cultivars classified by flower form into groups such as single, anemone, collerette, waterlily, decorative, ball, pompon, cactus and semi-cactus dahlias; dahlias are grown from tubers, flower from summer to frost, and are popular in gardens, cut flower production and competitive shows.","purpose":"Let an agent explain dahlias and their botany and cultivar groups, support growing, propagating and overwintering dahlias, describe shows and classification, and describe history and cultural significance.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Tuberous roots","Cultivar groups by flower form","Mexican origin","Frost tender"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What dahlias are.","layers":[{"id":"botany","name":"Botany","description":"Botany and origin.","findings":[{"id":"botany-finding","name":"Botany","description":"Botany.","questions":[{"text":"What are dahlias botanically, and where do they originate?","kind":"definition"},{"text":"Which entry fits the daisy family?","kind":"action"}]}]},{"id":"groups","name":"Groups","description":"Cultivar groups.","findings":[{"id":"groups-finding","name":"Groups","description":"Groups.","questions":[{"text":"How are dahlias classified into groups by flower form, and what distinguishes each group?","kind":"provenance"},{"text":"Which group or cultivar is meant?","kind":"boundary"}]}]}]},{"id":"grow","name":"Grow","description":"Growing dahlias.","layers":[{"id":"cultivate","name":"Cultivate","description":"Planting and care.","findings":[{"id":"cultivate-finding","name":"Cultivate","description":"Cultivation.","questions":[{"text":"How are dahlias planted, staked, fed, deadheaded and protected from pests?","kind":"action"},{"text":"Which entry fits garden pests?","kind":"action"}]}]},{"id":"overwinter","name":"Overwinter","description":"Propagation and overwintering.","findings":[{"id":"overwinter-finding","name":"Overwinter","description":"Overwintering.","questions":[{"text":"How are dahlias propagated from tubers and cuttings, and how are tubers lifted and stored over winter?","kind":"action"},{"text":"Which entry fits plant propagation?","kind":"action"}]}]}]},{"id":"show","name":"Show","description":"Shows and cut flowers.","layers":[{"id":"shows","name":"Shows","description":"Shows.","findings":[{"id":"shows-finding","name":"Shows","description":"Shows.","questions":[{"text":"How are dahlias judged at shows, and how are new cultivars registered?","kind":"provenance"},{"text":"Which entry fits horticultural shows?","kind":"action"}]}]},{"id":"cut","name":"Cut","description":"Cut flowers.","findings":[{"id":"cut-finding","name":"Cut","description":"Cut flowers.","questions":[{"text":"How are dahlias grown and handled as cut flowers?","kind":"provenance"},{"text":"Which entry fits the cut flower trade?","kind":"action"}]}]}]},{"id":"learn","name":"Learn","description":"History and culture.","layers":[{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How were dahlias cultivated in Mexico, introduced to Europe and bred into modern cultivars?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"culture","name":"Culture","description":"Cultural significance.","findings":[{"id":"culture-finding","name":"Culture","description":"Culture.","questions":[{"text":"What is the significance of the dahlia as the national flower of Mexico and in gardening culture?","kind":"provenance"},{"text":"Which misconceptions arise?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Explain dahlia botany, cultivar groups and show classification.","Give general growing, propagating and overwintering guidance from horticultural sources.","Identify a dahlia's form group from a photograph, stating uncertainty."],"mustNot":["Recommend pest control products beyond what local rules allow or the label permits.","Sell or describe tubers under a cultivar name that is not verified.","Dig up or take dahlias from gardens or collections without the owner's consent.","Advise releasing cultivated plants into wild habitats."],"requiresHuman":["Choosing chemical treatments in a garden shared with children, pets or pollinators."]},"ethics":{"considerations":["The dahlia is Mexico's national flower; its origins and culture deserve acknowledgement.","Garden chemicals used against slugs and earwigs can harm wildlife and pets."],"affectedParties":["Gardeners and growers","Pollinators and garden wildlife","Breeders of named cultivars"]},"owners":{"steward":"The gardener who grows it; a cultivar registration authority keeps the cultivar names.","roles":[],"masterSystems":["International dahlia cultivar register"]},"relations":[{"target":"Q886167","type":"parent","note":"registry parent class"},{"target":"flowering plant","type":"related","note":"category"},{"target":"tracheophyte","type":"related","note":"vascular plants"},{"target":"trellis","type":"related","note":"supports used for tall dahlias"},{"target":"thaw","type":"related","note":"frost and thaw affecting tubers"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.dahlia","Wikidata: Q130918 (https://www.wikidata.org/wiki/Q130918)"]},"properties":{"applicability":"required","items":["Plant height:  centimetres - Measure vertically from soil level to the highest living part, recording cultivar and growth stage.","Flower head diameter:  centimetres - Measure across the widest part of a fully opened flower head, recording cultivar and flower form.","Tuberous root fresh mass:  grams - Weigh an individual tuberous root after removing loose soil, recording its hydration and storage condition."]},"recognition":{"applicability":"required","items":["Tuberous perennial with showy composite flowers","Single, decorative, ball, pompon, cactus and other forms","Chrysanthemums and zinnias are related but distinct genera","Bushy plants with large showy flower heads in many forms and colours."]},"capabilities":{"applicability":"required","items":["explain botany and groups","support cultivation","describe shows and classification","describe history"]},"hazards":{"applicability":"required","items":["Tuber rot in storage","Pests such as slugs and earwigs","Frost damage"]},"interfaces":{"applicability":"required","items":["Cultivar classification by dahlia societies","Plant health rules on tuber trade","Show judging standards"]},"context":{"applicability":"required","items":["Tuberous flowering plants of the genus Dahlia.","single and anemone dahlias","collerette and waterlily dahlias","decorative dahlias","ball and pompon dahlias","cactus and semi-cactus dahlias"]}},"sources":[{"title":"Wikidata item Q130918: Dahlia","url":"https://www.wikidata.org/wiki/Q130918","note":"identity and sense of the item"},{"title":"Wikipedia: Dahlia","url":"https://en.wikipedia.org/wiki/Dahlia","note":"general description of the item"}],"openQuestions":["Should each cultivar group be a separate entry?","How should dahlia societies be linked?","How should cultivar registers be linked?"],"resources":{"spec":"/models/things/publications/thing-q130918/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q130918/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T05:34:49Z","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 2026-10-07T10:10:25+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}