{"id":"washingtonia-robusta","license":"CC-BY-4.0","data":{"scientificName":"Washingtonia robusta","commonNames":["Washington palm"],"taxonRank":"species","acceptedName":"Washingtonia robusta","family":"Arecaceae","ids":{"usdaSymbol":"WARO","gbifKey":5294595,"itisTsn":42515,"wikidataQid":"Q1096456","inatTaxonId":79521},"usdaZoneMin":"9a","zoneSource":"fps-2016","states":["CA","DC","DE","FL","MD","NJ","OH","PA","WV"],"invasiveIn":[{"state":"HI","status":"invasive-reported","source":"us-riis"},{"state":"L48","status":"invasive-reported","source":"us-riis"}],"statusAssertions":[{"status":"widespread-invasive","channel":"ecological","geography":{"grain":"aggregate-region","regions":["HI"]},"source":"us-riis-v2","sourceRecordId":"USRIIS-HI-Plantae11510","sourceVersion":"2.0 (November 2022)","asOf":"2022-10-23T00:00:00.000Z","sourceModified":"2022-05-09T00:00:00.000Z","sourceTaxon":{"name":"Washingtonia robusta","rank":"species","rawRank":"Species"},"sourceDesignation":{"code":"E","label":"widespread invasive (category E)"},"associatedReferences":["Wagner et al. (2012), https://naturalhistory2.si.edu/botany/hawaiianflora/Hawaiian_vascular_plant_updates_1.3.pdf"],"taxonProjection":{"basis":"exact-taxon","notes":"exact source identifier, rank, family, and scientific/accepted name"}},{"status":"widespread-invasive","channel":"ecological","geography":{"grain":"aggregate-region","regions":["L48"]},"source":"us-riis-v2","sourceRecordId":"USRIIS-L48-Plantae11334","sourceVersion":"2.0 (November 2022)","asOf":"2022-10-23T00:00:00.000Z","sourceModified":"2022-05-09T00:00:00.000Z","sourceTaxon":{"name":"Washingtonia robusta","rank":"species","rawRank":"Species"},"sourceDesignation":{"code":"E","label":"widespread invasive (category E)"},"associatedReferences":["USDA Natural Resources Conservation Service (NRCS) PLANTS Database (2021fmf), https://plants.usda.gov/home/plantProfile?symbol=WARO"],"taxonProjection":{"basis":"exact-taxon","notes":"exact source identifier, rank, family, and scientific/accepted name"}}],"hardinessAssertions":[{"minimum":"9","interpretation":"ambiguous-single-value","precision":"whole-zone","zoneMapping":"source-stated","applicability":"uncertain","applicabilityNotes":"The recovered selector prints one Cold Hardiness Zone value but does not define it as a minimum threshold or a one-zone range.","source":"fps-eastern-us","sourceRecordId":"washingtonia-robusta","sourceTaxon":"Washingtonia robusta","taxonMatch":"exact","sourcePlacement":"Cold Hardiness Zone field in the recovered selector record","sourceVersion":"2016-wayback","asOf":"2026-08-26T00:00:00.000Z"}],"plantForm":"tree","matureHeightFt":70,"sun":"full","photo":{"file":"/images/plants/washingtonia-robusta.jpg","sourceUrl":"https://www.inaturalist.org/photos/172095640","observationUrl":"https://www.inaturalist.org/observations/102895494","license":"cc-by","attribution":"(c) Bill Levine, some rights reserved (CC BY)","fetchedOn":"2026-08-23T00:00:00.000Z"},"evidence":[{"source":"fps-eastern-us","verdict":"avoid","verdictRaw":"NOT Firewise (4)","sourcePlacement":{"value":"LZ3","scheme":"fps-landscape-zone"},"edition":"2016-wayback","accessedOn":"2026-08-23T00:00:00.000Z"}],"flammabilityClass":"highly-flammable","ratingReason":"limited-evidence","recommendation":"avoid","author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-23T00:00:00.000Z","reviewNotes":"Photo auto-selected (top-voted iNat); human review pending."},"localAssessmentInputs":{"stateDistribution":["CA","DC","DE","FL","MD","NJ","OH","PA","WV"],"nativeStates":[],"rangeAssertions":[{"relation":"documented-occurrence","geography":{"grain":"state","stateCodes":["CA","DC","DE","FL","MD","NJ","OH","PA","WV"]},"provenance":"legacy-field"}],"usdaZoneMin":"9a","usdaZoneMax":null,"hardinessAssertions":[{"minimum":"9","interpretation":"ambiguous-single-value","precision":"whole-zone","zoneMapping":"source-stated","applicability":"uncertain","applicabilityNotes":"The recovered selector prints one Cold Hardiness Zone value but does not define it as a minimum threshold or a one-zone range.","source":"fps-eastern-us","sourceRecordId":"washingtonia-robusta","sourceTaxon":"Washingtonia robusta","taxonMatch":"exact","sourcePlacement":"Cold Hardiness Zone field in the recovered selector record","sourceVersion":"2016-wayback","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"}],"hardinessSelection":{"status":"unresolved-applicability","assertions":[{"minimum":"9","interpretation":"ambiguous-single-value","precision":"whole-zone","zoneMapping":"source-stated","applicability":"uncertain","applicabilityNotes":"The recovered selector prints one Cold Hardiness Zone value but does not define it as a minimum threshold or a one-zone range.","source":"fps-eastern-us","sourceRecordId":"washingtonia-robusta","sourceTaxon":"Washingtonia robusta","taxonMatch":"exact","sourcePlacement":"Cold Hardiness Zone field in the recovered selector record","sourceVersion":"2016-wayback","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"}]},"invasiveIn":[{"state":"HI","status":"invasive-reported","source":"us-riis"},{"state":"L48","status":"invasive-reported","source":"us-riis"}],"statusAssertions":[{"status":"widespread-invasive","channel":"ecological","geography":{"grain":"aggregate-region","regions":["HI"]},"source":"us-riis-v2","sourceRecordId":"USRIIS-HI-Plantae11510","sourceVersion":"2.0 (November 2022)","asOf":"2022-10-23T00:00:00.000Z","sourceModified":"2022-05-09T00:00:00.000Z","sourceTaxon":{"name":"Washingtonia robusta","rank":"species","rawRank":"Species"},"sourceDesignation":{"code":"E","label":"widespread invasive (category E)"},"associatedReferences":["Wagner et al. (2012), https://naturalhistory2.si.edu/botany/hawaiianflora/Hawaiian_vascular_plant_updates_1.3.pdf"],"taxonProjection":{"basis":"exact-taxon","notes":"exact source identifier, rank, family, and scientific/accepted name"},"provenance":"cited"},{"status":"widespread-invasive","channel":"ecological","geography":{"grain":"aggregate-region","regions":["L48"]},"source":"us-riis-v2","sourceRecordId":"USRIIS-L48-Plantae11334","sourceVersion":"2.0 (November 2022)","asOf":"2022-10-23T00:00:00.000Z","sourceModified":"2022-05-09T00:00:00.000Z","sourceTaxon":{"name":"Washingtonia robusta","rank":"species","rawRank":"Species"},"sourceDesignation":{"code":"E","label":"widespread invasive (category E)"},"associatedReferences":["USDA Natural Resources Conservation Service (NRCS) PLANTS Database (2021fmf), https://plants.usda.gov/home/plantProfile?symbol=WARO"],"taxonProjection":{"basis":"exact-taxon","notes":"exact source identifier, rank, family, and scientific/accepted name"},"provenance":"cited"}],"fireEvidenceClass":"highly-flammable","recommendation":"avoid","fireSourceScopes":[],"firePerformanceConditions":[],"maintenanceAssertions":[],"maintenanceConditions":null,"regulatoryReviews":{},"seedReviews":{}},"legacyCompatibilityProjection":{"nativeStates":[],"invasiveIn":[{"state":"HI","status":"invasive-reported","source":"us-riis-v2"},{"state":"L48","status":"invasive-reported","source":"us-riis-v2"}]},"localAssessmentContract":"Compare each dimension separately. State noxious-weed seed designations are material-scoped and never become non-seed plant restrictions, ecological-invasive findings, nursery restrictions, alternatives, product evidence, or fire votes. Introduced/established context is not an invasive warning. Minimum-only hardiness has no inferred maximum; canonical source-temperature conversion is validated and contradictory applicable rows project no primary zone. L48 context applies only to conterminous states and is never exact-state status. Fire-performance conditions are not maintenance advice. FEIS fire-ecology context does not vote in the plant classification. Absence of a status row is not regulatory clearance."}