Enter your ZIP to see whether this is legal to plant in your state, and whether it survives your winter.
For Catalpa, the computed direction is on-list on the evidence table. A limited evidence label keeps the support boundary explicit instead of letting the result imply a large source base. Both facts belong to this cited umbrella entry.
The genus-rank umbrella record remains distinct from the species organized on the genus page. Any hardiness evidence also stays outside the fire result. When comparison is useful, related plants provides a separate route that does not lend this entry's on-list direction to another Catalpa record. This boundary keeps hardiness, taxonomic scope, and fire direction from being merged.
Form
tree
Rated in
Nevada / Great Basin; OR/WA/ID
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
Nevada / Great Basin; OR/WA/ID
Maintenance
Typed publication scope: 2 scopes across 2 cited fire sources
The October 2023 joint Pacific Northwest Extension publication explicitly names Oregon, Washington, and Idaho and publishes more than 150 plant profiles. FireApproved has normalized 155 exact plant records from the source; publication scope does not assert that every listed plant suits every site within the three states.
University of Nevada Cooperative Extension compiled plants suited to Nevada climate zones and reported favorably by at least two upstream firewise lists. FireApproved publishes 126 exact source owners at Nevada publication scope. The source explicitly makes no independent flammability determination, so these rows remain corroborative.
2. Why this plant is relevant here
State distribution
Documented in ID, OR, WA.
Native range
Introduced / established
USDA hardiness
Documented range 4–8.
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.
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.
4–8 explicit range · whole zone precision · source stated
Source taxon: Catalpa · exact match.
Source location: Plant profile USDA hardiness zones field.
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.
