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European hornbeam is rated fire resistant overall, though one laboratory-based source finds moderate-to-high flammability.
Five of six independent sources support its use in fire-conscious landscaping. The USDA Forest Service and state Firewise programs give it Firewise 1, the best mark on their four-level scale, while noting that the upright form has very dense foliage. Ohio State’s extension service assigns low flammability, the second-lowest of five bands. Michigan State’s extension service recommends upright European hornbeam for the state’s climate, and FireSmart BC approves the species as fire resistant while flagging it for more research. Diputació de Girona and Bombers de la Generalitat de Catalunya give it their highest garden-suitability verdict, “muy recomendada.” That judgment assumes care suited to the species and weighs maintenance, fuel structure, origin, and invasiveness alongside fire evidence and fire-service experience.
The disagreement comes from Fire and Emergency New Zealand, which classifies European hornbeam as having moderate-to-high flammability. That finding is grounded in laboratory testing of shoots, so it addresses how plant material burns under the test method. The other assessments are chiefly expert or compiled recommendations for landscape use, sometimes weighing more than flammability alone. European hornbeam, a roughly 35-foot tree in the birch family, therefore has substantial support as a fire-resistant choice, but the New Zealand result cautions against treating that label as proof that its foliage cannot burn.
Form
tree
Mature height
~35 ft
Light
Full sun
Rated in
British Columbia; Catalonia, Spain; Michigan / Great Lakes; New Zealand +2
On this lot
1. Fire evidence and conditions
Fire evidence
Fire-resistant — location does not change the cited classification.
Michigan State University Extension Bulletin E2948 is explicitly a list of wildfire-resistant landscape plants for Michigan and includes a Michigan-native field. FireApproved publishes 221 exact GBIF owners from 226 represented source rows and holds 15 complex or non-exact rows. This dated publication scope is not a current site-suitability determination.
Ohio State University Extension Bulletin 921 is an Ohio publication that describes Ohio fire seasons and landscape conditions and labels nativity to Ohio. FireApproved publishes 352 exact source-owning plant records from its eight rated tables. This historical publication scope does not assert current extension endorsement or that a listed plant suits every Ohio site.
2. Why this plant is relevant here
State distribution
Documented in DC, DE, KY, MD, NJ, NY, OH, PA, WV.
Native range
Introduced / established
2 sourced range or established records. This is not an invasive warning.
USDA hardiness
Documented range 4–7.
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.
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 prints 5 · single-value meaning unresolved · whole zone precision · source stated
Source taxon: Carpinus betulus · exact match.
Source location: Cold Hardiness Zone field in the recovered selector record.
Not used for comparison: The recovered selector prints one Cold Hardiness Zone value but does not define it as a minimum threshold or a one-zone range.
4–7 explicit range · whole zone precision · source stated
Source taxon: Carpinus betulus · exact match.
Source location: Table 1, tree row.
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 2 — 5–10 ft from the structure; maintained lawn or fuel breaks, with easily ignited evergreens avoided [Fire Performance Plant Selector landscape zone] (with its recommendation)
Guía de pirojardinería: suitable inside or outside the 25-metre maximum-risk zone [girona-2020-iuf-25m-suitability] (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.
Carpinus betulus is rated “MUY 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.
Low Flammability Plants directory — Fire and Emergency New Zealand (plant flammability testing at Lincoln University) · 2026 · original sourcePrimary evidenceLab-testedlineage: lincoln-nz-tree
