{"id":"betula-nigra","license":"CC-BY-4.0","data":{"scientificName":"Betula nigra","commonNames":["River birch"],"taxonRank":"species","acceptedName":"Betula nigra","family":"Betulaceae","ids":{"usdaSymbol":"BENI","gbifKey":5331532,"itisTsn":19480,"wikidataQid":"Q1510231","inatTaxonId":117429},"usdaZoneMin":"5a","zoneSource":"fps-2016","states":["AL","AR","CT","DC","DE","FL","GA","IA","IL","IN","KS","KY","LA","MA","MD","MI","MN","MO","MS","NC","NH","NJ","NY","OH","OK","PA","SC","TN","TX","VA","VT","WI","WV"],"rangeAssertions":[{"relation":"native","geography":{"grain":"state","stateCodes":["AL"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 ALA — Alabama"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["AR"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern 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— Delaware"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["FL"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 FLA — Florida"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["GA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 GEO — Georgia"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["IA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 IOW — Iowa"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["IL"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 ILL — Illinois"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["IN"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 INI — Indiana"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["KS"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 KAN — Kansas"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["KY"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 KTY — Kentucky"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["LA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 LOU — Louisiana"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["MA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 MAS — Massachusetts"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["MD"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 MRY — Maryland"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["MN"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 MIN — Minnesota"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["MO"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 MSO — Missouri"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["MS"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 MSI — Mississippi"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["NC"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 NCA — North Carolina"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["NJ"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 NWJ — New Jersey"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["NY"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 NWY — New York"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["OH"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 OHI — Ohio"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["OK"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 OKL — Oklahoma"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["PA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 PEN — Pennsylvania"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["SC"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 SCA — South Carolina"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["TN"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 TEN — Tennessee"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["TX"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 77 — South-Central U.S.A.","TDWG level 3 TEX — Texas"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["VA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 VRG — Virginia"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["WI"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 WIS — Wisconsin"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"},{"relation":"native","geography":{"grain":"state","stateCodes":["WV"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 WVA — West Virginia"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z"}],"hardinessAssertions":[{"minimum":"5","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":"betula-nigra","sourceTaxon":"Betula nigra","taxonMatch":"exact","sourcePlacement":"Cold Hardiness Zone field in the recovered selector record","sourceVersion":"2016-wayback","asOf":"2026-08-26T00:00:00.000Z"},{"minimum":"3b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-31,"unit":"degrees-fahrenheit"},"applicability":"applicable","source":"usda-plants-characteristics","sourceRecordId":"BENI","sourceTaxon":"Betula nigra","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 69997, Temperature, Minimum (°F)","sourceVersion":"PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23","asOf":"2026-08-26T00:00:00.000Z"}],"plantForm":"tree","matureHeightFt":50,"sun":"part","waterNeed":"high","photo":{"file":"/images/plants/betula-nigra.jpg","sourceUrl":"https://www.inaturalist.org/photos/36689323","observationUrl":"https://www.inaturalist.org/observations/23707259","license":"cc-by","attribution":"(c) Lisa Wiencek Gerbec, some rights reserved (CC BY)","fetchedOn":"2026-08-23T00:00:00.000Z"},"evidence":[{"source":"fps-eastern-us","verdict":"recommend","verdictRaw":"Firewise (1)","claims":"Peeling papery bark and multi-trunk trees add fire potential.","sourcePlacement":{"value":"LZ3","scheme":"fps-landscape-zone"},"edition":"2016-wayback","accessedOn":"2026-08-23T00:00:00.000Z"},{"source":"bardon-2005","verdict":"recommend","verdictRaw":"Low flammability rating","edition":"2005","accessedOn":"2026-08-23T00:00:00.000Z"},{"source":"osu-b921","verdict":"recommend","verdictRaw":"L flammability","claims":"Tolerates wet soils; not tolerant of high pH; cold sensitive.","edition":"2006","url":"http://web.archive.org/web/20070714035936/http://www.firewise.org/usa/files/ohio_plantlist.pdf","accessedOn":"2026-08-23T00:00:00.000Z"},{"source":"va-firescapes","verdict":"recommend","verdictRaw":"L flammability","claims":"Tolerates wet soils, not tolerant of pH above 6.5.","edition":"2009","url":"http://web.archive.org/web/20090709143736/http://pubs.ext.vt.edu/430/430-300/430-300.pdf","accessedOn":"2026-08-23T00:00:00.000Z"},{"source":"ncsu-ag874","verdict":"recommend","verdictRaw":"low flammability","original":"bardon-2005","edition":"2025","url":"https://content.ces.ncsu.edu/fire-resistant-landscaping-in-north-carolina","accessedOn":"2026-08-23T00:00:00.000Z"},{"source":"ut-sp685","verdict":"recommend","verdictRaw":"listed Firewise plant","original":"va-firescapes","url":"https://utia.tennessee.edu/publications/wp-content/uploads/sites/269/2023/10/SP685.pdf","accessedOn":"2026-08-23T00:00:00.000Z"},{"source":"lsu-hammond","verdict":"recommend","verdictRaw":"recommended for firewise landscaping in Louisiana","edition":"c. 2005-2010","url":"https://www.lsuagcenter.com/portals/our_offices/research_stations/hammond/features/research-updates/firewise-landscaping","accessedOn":"2026-08-23T00:00:00.000Z"},{"source":"nc-plant-toolbox","verdict":"recommend","verdictRaw":"low flammability","claims":"NC Toolbox facet capture lists \"Betula nigra\" under the low flammability tag.","plantPart":"whole-plant","sourcePlacement":{"value":"betula-nigra","scheme":"nc-toolbox-flammability-facet"},"original":"bardon-2005","edition":"live facet capture accessed 2026-08-23","url":"https://plants.ces.ncsu.edu/plants/betula-nigra/","accessedOn":"2026-08-23T00:00:00.000Z"},{"source":"flamits","verdict":"not-rated","verdictRaw":"temperature at flaming (°C): 270","score":{"value":270,"scale":"FLAMITS — temperature at flaming (°C)"},"claims":"FLAMITS record 12554; Ignitability measurement; plant part leaves; fuel live; predrying no; device ignition temperature tester; site Shan2008-1; sampling ND. Primary study Shan2008: Shan, Y., Liu, N., & Shu, L. (2008). Flammability ranking of foliage species by factor analysis of physical and chemical pyric properties. Fire and Materials: An International Journal, 32, 371-382.","plantPart":"leaf","original":"Shan2008","edition":"Dryad version 9","url":"https://doi.org/10.5061/dryad.h18931zr3","documentDate":"2023-12-22T00:00:00.000Z","accessedOn":"2026-08-25T00:00:00.000Z"},{"source":"flamits","verdict":"not-rated","verdictRaw":"calorific value (kcal/kg): 4889.57","score":{"value":4889.57,"scale":"FLAMITS — calorific value (kcal/kg)"},"claims":"FLAMITS record 12555; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site Shan2008-1; sampling ND. Primary study Shan2008: Shan, Y., Liu, N., & Shu, L. (2008). Flammability ranking of foliage species by factor analysis of physical and chemical pyric properties. Fire and Materials: An International Journal, 32, 371-382.","plantPart":"leaf","original":"Shan2008","edition":"Dryad version 9","url":"https://doi.org/10.5061/dryad.h18931zr3","documentDate":"2023-12-22T00:00:00.000Z","accessedOn":"2026-08-25T00:00:00.000Z"},{"source":"mdfs-firewise-landscaping-plants","verdict":"recommend","verdictRaw":"relatively resistant to fire","claims":"Listed as Betula nigra (River birch). The source says listed species exhibit stronger resistance to ignition by wildfires. Source comments: Tolerates wet soils, not tolerant of pH above 6.5","plantPart":"whole-plant","sourcePlacement":{"value":"Deciduous Trees","scheme":"Maryland Firewise plant-form tables"},"edition":"2015 archived PDF","url":"https://web.archive.org/web/20250408035155/https://dnr.maryland.gov/forests/documents/fire/firewise_plants.pdf","documentDate":"2015-01-08T00:00:00.000Z","accessedOn":"2026-08-25T00:00:00.000Z"}],"flammabilityClass":"fire-resistant","ratingReason":"consensus","recommendation":"on-list","author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-23T00:00:00.000Z","reviewNotes":"Photo auto-selected (top-voted iNat); human review pending."},"localAssessmentInputs":{"stateDistribution":["AL","AR","CT","DC","DE","FL","GA","IA","IL","IN","KS","KY","LA","MA","MD","MI","MN","MO","MS","NC","NH","NJ","NY","OH","OK","PA","SC","TN","TX","VA","VT","WI","WV"],"nativeStates":[],"rangeAssertions":[{"relation":"native","geography":{"grain":"state","stateCodes":["AL"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 ALA — Alabama"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["AR"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 ARK — Arkansas"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["CT"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 CNT — Connecticut"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["DC"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 WDC — District of Columbia"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["DE"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — 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level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 KAN — Kansas"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["KY"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 KTY — Kentucky"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["LA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 LOU — Louisiana"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["MA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 MAS — Massachusetts"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["MD"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 MRY — Maryland"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["MN"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 MIN — Minnesota"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["MO"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 MSO — Missouri"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["MS"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 MSI — Mississippi"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["NC"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 NCA — North Carolina"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["NJ"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 NWJ — New Jersey"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["NY"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 NWY — New York"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["OH"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 OHI — Ohio"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["OK"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 OKL — Oklahoma"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["PA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 PEN — Pennsylvania"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["SC"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 SCA — South Carolina"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["TN"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 TEN — Tennessee"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["TX"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 77 — South-Central U.S.A.","TDWG level 3 TEX — Texas"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["VA"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 78 — Southeastern U.S.A.","TDWG level 3 VRG — Virginia"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["WI"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 74 — North-Central U.S.A.","TDWG level 3 WIS — Wisconsin"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"native","geography":{"grain":"state","stateCodes":["WV"],"regions":["TDWG level 1 7 — NORTHERN AMERICA","TDWG level 2 75 — Northeastern U.S.A.","TDWG level 3 WVA — West Virginia"]},"occurrenceStatus":"present","presenceStatus":"extant","source":"wcvp-v16","sourceVersion":"16","asOf":"2026-06-04T00:00:00.000Z","provenance":"cited"},{"relation":"documented-occurrence","geography":{"grain":"state","stateCodes":["AL","AR","CT","DC","DE","FL","GA","IA","IL","IN","KS","KY","LA","MA","MD","MI","MN","MO","MS","NC","NH","NJ","NY","OH","OK","PA","SC","TN","TX","VA","VT","WI","WV"]},"provenance":"legacy-field"}],"usdaZoneMin":"5a","usdaZoneMax":null,"hardinessAssertions":[{"minimum":"5","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":"betula-nigra","sourceTaxon":"Betula nigra","taxonMatch":"exact","sourcePlacement":"Cold Hardiness Zone field in the recovered selector record","sourceVersion":"2016-wayback","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"},{"minimum":"3b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-31,"unit":"degrees-fahrenheit"},"applicability":"applicable","source":"usda-plants-characteristics","sourceRecordId":"BENI","sourceTaxon":"Betula nigra","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 69997, Temperature, Minimum (°F)","sourceVersion":"PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"}],"hardinessSelection":{"status":"selected","assertion":{"minimum":"3b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-31,"unit":"degrees-fahrenheit"},"applicability":"applicable","source":"usda-plants-characteristics","sourceRecordId":"BENI","sourceTaxon":"Betula nigra","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 69997, Temperature, Minimum (°F)","sourceVersion":"PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"},"assertions":[{"minimum":"5","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":"betula-nigra","sourceTaxon":"Betula nigra","taxonMatch":"exact","sourcePlacement":"Cold Hardiness Zone field in the recovered selector record","sourceVersion":"2016-wayback","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"},{"minimum":"3b","interpretation":"minimum-threshold","precision":"half-zone","zoneMapping":"derived-containing-band","sourceMeasurement":{"kind":"minimum-temperature","value":-31,"unit":"degrees-fahrenheit"},"applicability":"applicable","source":"usda-plants-characteristics","sourceRecordId":"BENI","sourceTaxon":"Betula nigra","taxonMatch":"source-identifier","sourcePlacement":"PlantCharacteristics record 69997, Temperature, Minimum (°F)","sourceVersion":"PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23","asOf":"2026-08-26T00:00:00.000Z","provenance":"cited"}]},"invasiveIn":[],"statusAssertions":[],"fireEvidenceClass":"fire-resistant","recommendation":"on-list","fireSourceScopes":[{"source":"lsu-hammond","sourceName":"Firewise Landscaping (Hammond Research Station)","sourceUrl":"https://www.lsuagcenter.com/portals/our_offices/research_stations/hammond/features/research-updates/firewise-landscaping","geography":{"grain":"state","stateCodes":["LA"]},"completeness":"partial","reviewStatus":"reviewed","scope":"LSU AgCenter calls these 31 ornamentals commonly used in Louisiana and recommended for Louisiana firewise landscaping efforts. FireApproved publishes 31 exact source owners, mostly at the source's genus grain. Undocumented curation remains corroborative and is not site suitability.","sourceVersion":"LSU-Hammond-Firewise-Landscaping-2008-12-02","asOf":"2008-12-02T00:00:00.000Z"},{"source":"mdfs-firewise-landscaping-plants","sourceName":"Firewise Landscaping Plants (Maryland, New Jersey, and West Virginia editions)","sourceUrl":"https://web.archive.org/web/20250408035155/https://dnr.maryland.gov/forests/documents/fire/firewise_plants.pdf","geography":{"grain":"state","stateCodes":["MD"]},"completeness":"partial","reviewStatus":"reviewed","scope":"Maryland Forest Service says the list contains plants that can be grown in Maryland and identifies Maryland natives. FireApproved publishes 169 exact source owners from the 180 printed rows; an unrepresentable form and duplicate-owner rows are not broadened. The list calls itself non-comprehensive and does not establish suitability for every Maryland site.","sourceVersion":"Maryland-Firewise-Plants-2015-01-08","asOf":"2015-01-08T00:00:00.000Z"},{"source":"mdfs-firewise-landscaping-plants","sourceName":"Firewise Landscaping Plants (Maryland, New Jersey, and West Virginia editions)","sourceUrl":"https://www.nj.gov/dep/parksandforests/fire/docs/Firewise_Landscaping_Plants_for_NJ.pdf","geography":{"grain":"state","stateCodes":["NJ"]},"completeness":"partial","reviewStatus":"reviewed","scope":"New Jersey DEP publishes a state edition saying the listed plants can be grown in New Jersey and are relatively resistant to fire. Its same 180 printed taxon occurrences map to the 169 conservative owners already normalized for the template family. The list is non-comprehensive and does not establish suitability for every New Jersey site or override the Pinelands Commission's separate placement and fuel-break rules.","sourceVersion":"New-Jersey-Firewise-Landscaping-Plants-archive-2025-09-01"},{"source":"mdfs-firewise-landscaping-plants","sourceName":"Firewise Landscaping Plants (Maryland, New Jersey, and West Virginia editions)","sourceUrl":"https://wvforestry.com/pdf/Firewise%20Landscaping%20Plants%20for%20WV.pdf","geography":{"grain":"state","stateCodes":["WV"]},"completeness":"partial","reviewStatus":"reviewed","scope":"West Virginia Division of Forestry publishes a state edition saying the listed plants can be grown in West Virginia and are relatively resistant to fire. Its same 180 printed taxon occurrences map to the 169 conservative owners already normalized for the template family. The list is non-comprehensive and provides no comparative or site-specific rating.","sourceVersion":"West-Virginia-DOF-Firewise-Landscaping-Plants-live-2026-08-26","asOf":"2026-08-26T00:00:00.000Z"},{"source":"ncsu-ag874","sourceName":"Fire-Resistant Landscaping in North Carolina (AG-874)","sourceUrl":"https://content.ces.ncsu.edu/fire-resistant-landscaping-in-north-carolina","geography":{"grain":"state","stateCodes":["NC"]},"completeness":"complete","reviewStatus":"reviewed","scope":"The complete three-table AG-874 plant list is explicitly for North Carolina and contains 202 low-, medium-, or high-flammability rows. FireApproved accounts for all source rows under its strict taxonomy and lineage rules; source scope does not establish local suitability at a particular North Carolina site.","sourceVersion":"AG-874-reviewed-2025-03-26","asOf":"2025-03-26T00:00:00.000Z"},{"source":"osu-b921","sourceName":"Firewise Landscaping (OSU Extension Bulletin 921)","sourceUrl":"http://web.archive.org/web/20070714035936/http://www.firewise.org/usa/files/ohio_plantlist.pdf","geography":{"grain":"state","stateCodes":["OH"]},"completeness":"partial","reviewStatus":"reviewed","scope":"Ohio State University Extension Bulletin 921 is an Ohio publication that describes Ohio fire seasons and landscape conditions and labels nativity to Ohio. FireApproved publishes 352 exact source-owning plant records from its eight rated tables. This historical publication scope does not assert current extension endorsement or that a listed plant suits every Ohio site.","sourceVersion":"OSU-Extension-Bulletin-921-2006","asOf":"2006-03-01T00:00:00.000Z"},{"source":"ut-sp685","sourceName":"Landscaping Guidelines to Protect Your Home from Wildfire (SP685)","sourceUrl":"https://utia.tennessee.edu/publications/wp-content/uploads/sites/269/2023/10/SP685.pdf","geography":{"grain":"state","stateCodes":["TN"]},"completeness":"partial","reviewStatus":"reviewed","scope":"University of Tennessee Extension SP685 is Tennessee landscape guidance and publishes 78 represented plant owners. Most table rows are a carrier of Virginia Firescapes rather than an independent rating; Tennessee source scope does not change that lineage or establish site suitability.","sourceVersion":"UT-Extension-SP685-2006-10-24","asOf":"2006-10-24T00:00:00.000Z"},{"source":"va-firescapes","sourceName":"Virginia Firescapes — Firewise Landscaping for Woodland Homes (430-300)","sourceUrl":"http://web.archive.org/web/20090709143736/http://pubs.ext.vt.edu/430/430-300/430-300.pdf","geography":{"grain":"state","stateCodes":["VA"]},"completeness":"partial","reviewStatus":"reviewed","scope":"Virginia Cooperative Extension's publication opens with Virginia wildfire conditions, identifies its Virginia Firewise Landscaping Task Force, and labels plants native to Virginia. FireApproved publishes 306 exact source owners. Publication scope does not establish parcel suitability or current endorsement of this archived 2009 list.","sourceVersion":"Virginia-VCE-430-300-2009","asOf":"2009-04-15T00:00:00.000Z"}],"firePerformanceConditions":[],"maintenanceAssertions":[],"maintenanceConditions":null,"regulatoryReviews":{},"seedReviews":{}},"legacyCompatibilityProjection":{"nativeStates":["AL","AR","CT","DC","DE","FL","GA","IA","IL","IN","KS","KY","LA","MA","MD","MN","MO","MS","NC","NJ","NY","OH","OK","PA","SC","TN","TX","VA","WI","WV"],"invasiveIn":[],"usdaZoneMin":"3b"},"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."}