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Encelia farinosa has native and introduced range both cited in range evidence. Its fire pack is limited evidence on the evidence table, and the record keeps 1 ecological invasive report as distinct status context. Those facts retain separate jobs beside the distribution split.
The related plants section offers comparison without adding another species' rows to brittlebush. This boundary leaves the native-and-introduced geography on the range route, the ecological report in its status channel, and the limited source depth with the fire evidence. None of those sections is used to enlarge a different fact or to speak for another Encelia record.
Form
perennial
Mature height
~5 ft
Water need
low
Rated in
Global; Yavapai County, Arizona
On this lot
1. Fire evidence and conditions
Fire evidence
Mixed evidence — location does not change the cited classification.
Fire-performance conditions
Fire ecology context
Placement evidence
Evidence regions
Global; Yavapai County, Arizona
Maintenance
Typed publication scope: 1 scope across 1 cited fire source
Yavapai County (AZ footprint); partial normalized coverage · 2025-03-14
University of Arizona Cooperative Extension authors Bulletin 34 for Yavapai County. FireApproved publishes 198 exact source owners from its resistant and prone tables and keeps the county boundary visible. County publication scope is regional Arizona context, never statewide scope.
2. Why this plant is relevant here
State distribution
Documented in AZ, CA, HI, NV, UT.
Native range
Current cited native range in AZ, CA, NV.
Introduced / established
2 sourced range or established records. This is not an invasive warning.
USDA hardiness
Documented minimum 9b; no upper limit is documented.
3. Legal, ecological, and broader status
Legal-list status
Seed-list status
Reported invasive here
Broader regional context
Federal context
How to read this page
The status above is computed from the cited rows below: independent recommendations can support a fire-resistant result, an avoid row can produce keep-away, and disagreement stays visible as conflict. Placement notes preserve each source’s own scheme rather than translating unlike rules into one scale. This is evidence about a plant, not permission to plant it in every part of the defensible space; Zone 0 remains noncombustible.
Native and introduced range evidence
These are exact U.S. botanical-area records from the cited range source. Native and
introduced describe biogeographic relationship, not fire performance or planting approval.
Doubtful and extinct rows stay visible but do not count as current presence.
The lossless worldwide derivative is retained once in the research corpus; object pages repeat only exact U.S. areas needed by the local lens. The JSON twin carries the same page assertions.
Plant hardiness evidence
These values describe the plant source. Your ZIP zone comes from the separate 2023 USDA
Plant Hardiness Zone Map. Whole-zone values stay whole-zone, and a single unresolved value
is not treated as a tolerance range. Different source boundaries stay separate: overlapping
statements are compared independently, while only ranges with no shared zone are called a conflict.
Source location: PlantCharacteristics record 34538, Temperature, Minimum (°F).
The evidence
Grouped by what each source concluded. Primary evidence rated the plant itself
(a lab, field program, or original curation); corroboration compiled or
republished another source's rating and resolves to its root lineage.
Listed as Bri lebush — Encelia farinosa. The bulletin says fire-resistant plants tend to resist ignition when irrigated and maintained, while fire-prone plants may ignite readily and burn intensely.
Listed without a rating (12)Corroboration (12 rows from 1 source)
12 cited rows from this source; its identity, lineage and tier are stated once.
Primary study White1996: White, R. H., Weise, D. R., & Frommer, S. (1996). Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. 21st International Conference on Fire Safety. Coimbra, Portugal.
Shared row context: plant part leaves; fuel live; predrying no; device calorimeter; site White1996-1; sampling ND.
