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Yes, common crabapple is classified as fire resistant overall, but direct testing and regional guidance give it a mixed profile.
Diputació de Girona and Bombers de la Generalitat de Catalunya recommend Malus domestica for gardens with species-specific care. Fire evidence and expert fire-service experience inform that recommendation, as do fuel structure, maintenance, origin and invasiveness. That is broader than a simple test of how readily the plant burns.
Other sources are less reassuring. Fire and Emergency New Zealand classifies it as having moderate-high flammability, while the USDA Forest Service and state Firewise programs place it in “Moderately Firewise,” the second band of their four-level scale. An Idaho Firewise workbook reports a value of 30 attributed to the Idaho Database, although the database’s stated resistance scale runs from 0 to 10, so that value cannot be translated reliably into a planting distance.
Laboratory work adds an important caution. Predried common-crabapple branches ignited in 100 percent of grill-device trials. That figure describes tested branch samples under those conditions, not the likelihood that a living tree will ignite in a yard.
The fire-resistant label therefore reflects the overall balance, not unanimous agreement or uniformly low flammability. Common crabapple can reasonably be treated as a qualified fire-resistant choice, with local guidance and species-specific care carrying more weight than the label alone.
Form
tree
Region
New Zealand
Rated in
Catalonia, Spain; Global; New Zealand; eastern US +1
Uses
fruit
On this lot
1. Fire evidence and conditions
Fire evidence
Fire-resistant — location does not change the cited classification.
Southern Idaho (ID footprint); partial normalized coverage · 2013-11-08
The official database labels itself "For Southern Idaho" and describes Idaho residents at the urban-rangeland interface. FireApproved publishes 419 existing plant owners that cite its scored rows. This bounded Southern Idaho scope is regional context, not statewide coverage or a conclusion that the score transfers unchanged to every Idaho site.
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.
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.
Eastern United States Fire Performance Plant Selector: Landscape Zone 3 — 10–30 ft from the structure; thin vegetation, remove debris, and minimize plant massing [Fire Performance Plant Selector landscape zone] (mid-scale rating)
Guía de pirojardinería: suitable inside or outside the 25-metre maximum-risk zone [girona-2020-iuf-25m-suitability] (with its recommendation)
Fire Resistance of Plants Master Database: 30 ft minimum planting distance on flat terrain [Idaho minimum planting distance] (with its recommendation)
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.
Malus domestica is rated “RECOMENDADA” by the guide's qualitative IUF garden-suitability method. The method assumes species-specific care and integrates fire evidence with fuel structure, maintenance, origin, invasiveness, and expert fire-service experience.
Living With Fire workbook row 840 attributes this value to Idaho Database.
Mid-scale / conditional (2)
Low Flammability Plants directory — Fire and Emergency New Zealand (plant flammability testing at Lincoln University) · 2026 · original sourcePrimary evidenceLab-testedlineage: lincoln-nz-tree
4 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.
