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Berberis oiwakensis is assigned avoid in the evidence table. The sourced conclusion leads this mahonia record and keeps its species-specific scope.
Its accepted material remains limited evidence. The cited entries expose that boundary without an extra fire condition, test method, or measured outcome.
Same-form alternatives are documented under related plants. They do not carry over the avoid status or limited source depth, while the genus collection stays outside this selected species pack. That separation lets readers inspect alternatives without turning them into support for this species or its recommendation alone.
Highly flammable — location does not change the cited classification.
Fire-performance conditions
Fire ecology context
Placement evidence
Evidence regions
New Zealand
Maintenance
2. Why this plant is relevant here
State distribution
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.
Avoids (1)
Low Flammability Plants directory — Fire and Emergency New Zealand (plant flammability testing at Lincoln University) · 2026 · original sourcePrimary evidenceLab-testedlineage: lincoln-nz-tree
