A separate look at the source rows keeps recommendation and taxonomic scope available together. The genus picker distinguishes individual species records for decisions requiring narrower evidence. This prevents the umbrella's on-list result from following the twistedstalk name onto a narrower page without its own support. The evidence-depth description stays visible throughout that narrower comparison beside its on-list result.
Form
perennial
Rated in
western WA
On this lot
1. Fire evidence and conditions
Fire evidence
Fire-resistant — location does not change the cited classification.
Fire-performance conditions
Fire ecology context
Placement evidence
Evidence regions
western WA
Maintenance
Typed publication scope: 1 scope across 1 cited fire source
King County's current wildfire page links this list for the Puget Sound Basin. FireApproved publishes 82 exact source owners as basin context, not statewide Washington guidance or a site-specific recommendation.
2. Why this plant is relevant here
State distribution
Documented in WA.
Native range
Introduced / established
USDA hardiness
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.
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.