No sourced horticultural maintenance assertion is normalized; fire-test conditions do not supply maintenance advice.
2. Why this plant is relevant here
State distribution
Documented in AK, CA, ID, MT, NV, OR, WA.
Native range
Current cited native range in AK, CA, ID, MT, OR, WA.
Introduced / established
No introduced or established row is normalized; that does not prove native status.
USDA hardiness
Documented minimum 5a; no upper limit is documented.
3. Legal, ecological, and broader status
Legal-list status
Set a location for an exact legal-list result; source silence is not clearance.
Seed-list status
Set a location to compare the separate state noxious-weed seed layer.
Reported invasive here
No ecological invasive report is normalized; that does not prove noninvasiveness.
Broader regional context
Aggregate AK, HI, and L48 evidence is shown only as regional context, never as an exact-state finding.
Federal context
Federal designations remain separate from state legal-list results.
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.
Form
tree
USDA hardiness
Minimum 5a; upper limit not documented
Mature height
~40 ft
Water need
low
Current cited native range
AK, CA, ID, MT, OR, WA
Grows in
AK, CA, ID, MT, NV, OR, WA
Rated in
Global
Family
Taxaceae
Evidence
4 cited sources
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 15638, 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.
4 cited rows from this source; its identity, lineage and tier are stated once.
“time to flaming (s): 4.2”
· score 4.2 (FLAMITS — time to flaming (s))
FLAMITS record 16488; Ignitability measurement; plant part leaves; fuel live; predrying no; device flat flame burner; site Fazeli2022-1; sampling september to february. Primary study Fazeli2022: Fazeli, H., Jolly, W. M., & Blunck, D. L. (2022). Stages and time-scales of ignition and burning of live fuels for different convective heat fluxes. Fuel, 324, 124490.
“time to flaming (s): 14.8”
· score 14.8 (FLAMITS — time to flaming (s))
FLAMITS record 16489; Ignitability measurement; plant part leaves; fuel live; predrying no; device flat flame burner; site Fazeli2022-1; sampling september to february. Primary study Fazeli2022: Fazeli, H., Jolly, W. M., & Blunck, D. L. (2022). Stages and time-scales of ignition and burning of live fuels for different convective heat fluxes. Fuel, 324, 124490.
“time to flaming (s): 0.3”
· score 0.3 (FLAMITS — time to flaming (s))
FLAMITS record 16490; Ignitability measurement; plant part leaves; fuel dead; predrying no; device flat flame burner; site Fazeli2022-1; sampling september to february. Primary study Fazeli2022: Fazeli, H., Jolly, W. M., & Blunck, D. L. (2022). Stages and time-scales of ignition and burning of live fuels for different convective heat fluxes. Fuel, 324, 124490.
“time to flaming (s): 0.7”
· score 0.7 (FLAMITS — time to flaming (s))
FLAMITS record 16491; Ignitability measurement; plant part leaves; fuel dead; predrying no; device flat flame burner; site Fazeli2022-1; sampling september to february. Primary study Fazeli2022: Fazeli, H., Jolly, W. M., & Blunck, D. L. (2022). Stages and time-scales of ignition and burning of live fuels for different convective heat fluxes. Fuel, 324, 124490.