The record cites same-form alternatives in related plants. Range evidence locates the species evidence, and the genus page collects other members without blending their conclusions into this one. These routes distinguish the laboratory direction from the two invasive reports and keep the comparison useful at species rank. This species record carries the accepted rows described on this page.
2 sourced range or established records. This is not an invasive warning.
USDA hardiness
3. Legal, ecological, and broader status
Legal-list status
Seed-list status
Reported invasive here
2 ecological invasive reports.
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.
Where its sources say to plant it
Placement rules below use each source's own distances or named zones, tied to its rating.
They are not interchangeable with the directory's current Zone 0 guidance.
Fire Resisting Garden Plants for the Urban Fringe and Rur…: remove from the Building Protection Zone; avoid in the Fuel Modified Zone [Texas Building Protection Zone] (with its avoid rating)
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.
Shoot category from the paper's cluster analysis; samples were air-dried for 24 hours before testing.
Mid-scale / conditional (1)
Low Flammability Plants directory — Fire and Emergency New Zealand (plant flammability testing at Lincoln University) · 2026 · original sourcePrimary evidenceLab-testedlineage: lincoln-nz-tree
“Moderate/high flammability”
Moderate/high flammability classification.
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 Cui2020a: Cui, X., Paterson, A. M., Wyse, S. V., Alam, M. A., Maurin, K. J. L., Pieper, R., ... Curran, T. J. (2020a). Shoot flammability of vascular plants is phylogenetically conserved and related to habitat fire-proneness and growth form. Nature Plants, 6, 355-359.
Shared row context: plant part branches; fuel all; predrying yes; device grill; site Cui2020a-1; sampling ND.
“ignition frequency (%): 100”
FLAMITS record 1390; Ignitability measurement.
“maximum sample temperature (°C): 599.7”
FLAMITS record 1584; Combustibility measurement.
“burning duration (s): 50.8”
FLAMITS record 1778; Sustainability measurement.
“estimated burnt biomass (%): 53.3”
FLAMITS record 1972; Consumability measurement.
Primary study Dickinson1985: Dickinson, K. J. M., & Kirkpatrick, J. B. (1985). The flammability and energy content of some important plant-species and fuel components in the forests of Southeastern Tasmania. Journal of Biogeography, 12, 121-134.
Shared row context: plant part leaves; predrying yes; device calorimeter; site Dickinson1985-1; sampling winter.
“rate of burning spread (cm/s): 0.45”
FLAMITS record 2911; Sustainability measurement; fuel dead.
“calorific value (kcal/kg): 5319.78”
FLAMITS record 2919; Combustibility measurement; fuel live.
Primary study Wyse2016: Wyse, S. V., Perry, G. L. W., O'Connell, D. M., Holland, P. S., Wright, M. J., Hosted, C. L., ... Curran, T. J. (2016). A quantitative assessment of shoot flammability for 60 tree and shrub species supports rankings based on expert opinion. International Journal of Wildland Fire, 25, 466-477.
Shared row context: plant part branches; fuel all; predrying yes; device grill; site Wyse2016-3; sampling ND.
