{"schemaVersion":"0.2.0","identity":{"slug":"physostegia-virginiana","canonicalPath":"/plants/physostegia-virginiana","botanicalName":"Physostegia virginiana","commonName":"Obedient plant","type":"perennial"},"coldHardiness":{"usdaZones":"3a-9b","plainLanguage":"brutally cold to frosty winters","bandEdgesCelsius":{"coldFloor":-40,"warmCeiling":-1.1111111111111112},"rhsEquivalent":{"rating":"H7","summary":"very hardy"}},"provenance":{"reviewStatus":"source-backed","citationCount":18,"citations":[{"field":"identity","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"summary","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"image","source":"wikimedia-commons","url":"https://commons.wikimedia.org/wiki/Special:FilePath/Physostegia%20virginiana%20(scharnierplant).JPG?width=1200","retrievedAt":"2026-05-17"},{"field":"plant-type","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"light","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"moisture","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"hardiness","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"heat-zone","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"size","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"spacing","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"habit","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"design-roles","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"seasonal-interest","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"growth-stages","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"lifecycle","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"regional-guidance","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"success-tips","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"},{"field":"designer-notes","source":"nc-state-plant-toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","retrievedAt":"2026-05-17"}],"sources":[{"label":"NC State Extension Gardener Plant Toolbox","url":"https://plants.ces.ncsu.edu/plants/physostegia-virginiana/","license":"Curated extension profile; cite and link the specific plant page."},{"label":"Missouri Botanical Garden PlantFinder","url":"https://plantfinder.mobot.org/PlantFinderDetails.aspx?taxonid=281413","license":"Curated horticultural reference; cite and link the specific PlantFinder page."},{"label":"Lady Bird Johnson Wildflower Center Native Plant Database","url":"https://www.wildflower.org/plants/result.php?id_plant=PHVI8","license":"Native-plant database content © University of Texas at Austin; factual data is not copyrightable but attribution is required."},{"label":"USDA PLANTS Database","url":"https://plants.usda.gov/plant-profile/PHVI8","license":"U.S. federal government factual data (public domain); cite and link the species PROFILE page."},{"label":"RHS Find a Plant (Royal Horticultural Society)","url":"https://www.rhs.org.uk/plants/12881/physostegia-virginiana/details","license":"RHS content © Royal Horticultural Society; paraphrased with attribution. Cited via the Find-a-Plant search landing (no public per-taxon API)."},{"label":"GBIF (Global Biodiversity Information Facility)","url":"https://www.gbif.org/species/2926572","license":"Aggregated taxonomic-backbone + occurrence data under open licenses; cite and link the GBIF species page."},{"label":"Wikipedia","url":"https://en.wikipedia.org/wiki/Physostegia_virginiana","license":"Text under CC BY-SA 4.0; used as a corroborating encyclopedic reference (not a primary authority) - attribute + link the article."},{"label":"Wikimedia Commons file page","url":"https://commons.wikimedia.org/wiki/Special:FilePath/Physostegia%20virginiana%20(scharnierplant).JPG?width=1200","license":"CC BY-SA 3.0; attribution required, share-alike for derivatives."},{"label":"ASPCA Toxic and Non-Toxic Plant List: Dogs (checked, no entry)","url":"https://www.aspca.org/pet-care/animal-poison-control/dogs-plant-list","license":"ASPCA content © ASPCA; the finding is stated with attribution and a link."}]},"sourceability":{"whereToBuy":[],"localInventory":null},"gradingContract":{"fn":"gradePlantFit(usdaZones, placeDerivedZone) -> \"well-suited\" | \"marginal\" | \"wont-grow\" | null","fitGrades":["well-suited","marginal","wont-grow"],"placeInput":"DerivedZone: { zone; zoneDecimal; window; scenario; confidence; spreadHalfZones } - the consumer derives this for the target place.","windows":"now (2025) | mid-century (2055 anchor) | late-century (2085)","scenarios":"ssp126 | ssp370 (default) | ssp585"},"nativeDistribution":{"nativeStates":["AL","AR","CT","DC","FL","GA","IA","IL","IN","KS","KY","LA","MD","ME","MI","MN","MO","NC","ND","NE","NH","NM","NY","OH","OK","PA","RI","SC","SD","TN","TX","VA","VT","WI","WV","MB","ON","QC"],"hasNatureServeDistribution":false}}