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Sweet bay is not a fire-resistant choice near structures; the stronger evidence supports treating it as highly flammable.
Four of six sources warn against it. Research published in Landscape and Urban Planning rated sweet bay extremely flammable, at 5 on the Valette 0-to-5 scale. Across 200 live-leaf samples, foliage averaged 118.6% moisture, ignited in 8.86 seconds, and burned with flame for 5.9 seconds. France’s Office national des forêts also rated it strongly fire-sensitive, combining bench measurements of ignition, intensity, and combustion with foresters’ observations of fire damage.
The Dorset Heaths Partnership placed bay in its red class; its leaflet warns that dead, dry parts can produce flames above 2.5 metres. Catalan guidance likewise advises against sweet bay under a broader garden-suitability method that assumes species-specific care and considers fuel structure, maintenance, origin, invasiveness, and fire-service experience.
Two sources reach a different practical conclusion. NC State Extension tags sweet bay as low flammability, but its toolbox does not document who assigned the values. The Australian Capital Territory’s compiled selector marks it “Fire Retardant: Yes.” Those positive classifications deserve acknowledgment, but the measured ignition result and repeated European warnings carry the practical conclusion: keep this Lauraceae tree away from structures.
Australian Capital Territory, Australia; Catalonia, Spain; Córdoba, southern Spain; Dorset, United Kingdom; Global; Israel; Mediterranean southeast France; North Carolina / southeastern US
Maintenance
2. Why this plant is relevant here
State distribution
Documented in CA, NC.
Native range
Introduced / established
USDA hardiness
Documented range 8b–10b.
3. Legal, ecological, and broader status
Legal-list status
Seed-list status
Reported invasive here
1 ecological invasive report.
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.
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.
Guía de pirojardinería: not suitable inside the 25-metre maximum-risk zone [girona-2020-iuf-25m-suitability] (with its avoid rating)
North Carolina Extension Gardener Plant Toolbox: laurus-nobilis [nc-toolbox-flammability-facet] (with its recommendation)
Canberra Plant Selector: filtered result page 1 [canberra-selector] (with its recommendation)
השרפה בהרי יהודה – 2021: ניתוח: recommendations, treatment of public-use forest areas [judean-hills-2021-less-flammable-than-pine] (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.
“מיני עצים דליקים פחות מאורנים, כדוגמת — Laurus nobilis”
The authors name this exact species as an example of a tree less flammable than pines for high, shading groves in public-use forest areas and their access roads.
The fiche's overall sensitivity combines experimental-bench inflammability, intensity, and combustion measurements with foresters' observations of fire damage.
Laurus nobilis is rated “DESACONSEJADA” 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.
Listed without a rating (30)Corroboration (30 rows from 1 source)
30 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 1418; Ignitability measurement.
“maximum sample temperature (°C): 463.8”
FLAMITS record 1612; Combustibility measurement.
“burning duration (s): 12.4”
FLAMITS record 1806; Sustainability measurement.
“estimated burnt biomass (%): 32”
FLAMITS record 2000; Consumability measurement.
Primary study Kauf2014: Kauf, Z., Fangmeier, A., Rosavec, R., & panjol, . (2014). Testing Vegetation Flammability: The Problem of Extremely Low Ignition Frequency and Overall Flammability Score. Journal of Combustion, 2014, 1-10.
Shared row context: plant part litter; fuel all; predrying no; device epiradiator; site Kauf2014-1; sampling may.
Primary study Molina2017: Molina, J. R., Martín, T., Rodríguez Y Silva, F., & Herrera, M. Á. (2017). The ignition index based on flammability of vegetation improves planning in the wildland-urban interface: A case study in Southern Spain. Landscape and Urban Planning, 158, 129-138.
Shared row context: plant part leaves; fuel live; predrying no; device epiradiator; site Molina2017-1; sampling summer.
Primary study Belcher2017: Belcher, C. M., & Hudspith, V. A. (2017). Changes to Cretaceous surface fire behaviour influenced the spread of the early angiosperms. New Phytologist, 213, 1521-1532.
Shared row context: plant part litter; fuel all; predrying no; device calorimeter; site Belcher2017-1; sampling .
Primary study Pacheco2022: Pacheco, A. S., Goodman, H. D., Hankenson, L., Fisk, J. J., Ortiz, A., Marinace, H. M., ... Tng, D. Y. P. (2022). Fighting fire with food: Assessing the flammability of crop plant species for building fire resilient agroforestry systems. in review, preprint.
Shared row context: plant part branches; fuel all; predrying yes; device grill; site Pacheco2022-1; sampling october to november 2022.
“maximum flame temperature (°C): 832.15”
FLAMITS record 16249; Combustibility measurement.
“burning duration (s): 12.5”
FLAMITS record 16250; Sustainability measurement.
“estimated burnt biomass (%): 7.5”
FLAMITS record 16251; Consumability measurement.
Primary study Wesolowski2003: Weso?owski, M., & Konieczynski, P. (2003). Thermal decomposition and elemental composition of medicinal plant materialsLeaves and flowers Principal component analysis of the results. Thermochimica Acta, 397, 171180.
Shared row context: plant part leaves; fuel live; predrying yes; device thermal analyzer; site Wesolowski2003-1; sampling ND.
Laurus nobilis (Bay Laurel, Bay Leaf Tree, Bay Tree, Grecian Laurel). FireApproved. https://fireapproved.com/plants/laurus-nobilis/. Last verified 2026-08-26.
