Enter your ZIP to see whether this is legal to plant in your state, and whether it survives your winter.
One Washington legal-list row applies to Crataegus monogyna. It is a noxious-list status and remains independent of the species' on-list fire recommendation in the evidence table; regulatory standing does not enter the fire calculation.
The sole directional fire source rates the shrub “MUY RECOMENDADA” under a garden-suitability method, leaving that result at limited evidence. The remaining rows are laboratory measurements and do not add rated votes.
Two ecological reports identify invasive status in Alaska and the Lower 48. Range evidence keeps those geographies readable, comparisons offer other shrubs, and the genus index preserves source separation across the entries in the genus.
Form
shrub
Mature height
~20 ft
Water need
moderate
Rated in
Catalonia, Spain; Global
On this lot
1. Fire evidence and conditions
Fire evidence
Fire-resistant — location does not change the cited classification.
Documented in AK, AR, CA, CT, DC, DE, IL, KY, MA, ME, MI, MT, NH, NJ, NY, OH, OR, PA, RI, TN, UT, VA, VT, WA, WI, WV.
Native range
Introduced / established
22 sourced range or established records. This is not an invasive warning.
USDA hardiness
Documented minimum 4b; no upper limit is documented.
3. Legal, ecological, and broader status
Legal-list status
1 legal-list record; the Place chip matches exact scope.
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.
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 location: PlantCharacteristics record 89353, Temperature, Minimum (°F).
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.
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.
Crataegus monogyna 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.
Listed without a rating (13)Corroboration (13 rows from 1 source)
13 cited rows from this source; its identity, lineage and tier are stated once.
Primary study Blackhall2019: Blackhall, M., & Raffaele, E. (2019). Flammability of Patagonian invaders and natives: When exotic plant species affect live fine fuel ignitability in wildland-urban interfaces. Landscape and Urban Planning, 189, 1-10.
Shared row context: plant part twigs; fuel live; predrying no; device epiradiator; site Blackhall2019-1; sampling february.
Primary study Henaoui2013: Henaoui, S. E. -A., Bouazza, M., & Amara, M. (2013). The fire risk of the plant groupings with Cistus in the area of Tlemcen (Western Algeria). European Scientific Journal, 9, 84-103.
Shared row context: plant part twigs; fuel live; predrying yes; device infrared burner; site Henaoui2013-1; sampling spring.
“flame height (cm): 17.01”
FLAMITS record 4879; Combustibility measurement.
“time to flaming (s): 63.22”
FLAMITS record 4917; Ignitability measurement.
“burning duration (s): 116.28”
FLAMITS record 4955; Sustainability measurement.
Primary study Madrigal2011a: Madrigal, J., Guijarro, M., Hernando, C., Díez, C., & Marino, E. (2011a). Effective Heat of Combustion for Flaming Combustion of Mediterranean Forest Fuels. Fire Technology, 47, 461-474.
Shared row context: plant part twigs; fuel live; predrying no; device calorimeter; site Madrigal2011a-1; sampling ND.