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Ambrosia dumosa

Ambrosia dumosa · Asteraceae

Your local evidence lens

Separate evidence questions, never one approval badge

Set a ZIP to compare this record with state distribution, native range, USDA hardiness, and invasive records.

A genus split is not a placement verdict. Set a ZIP to read the local documented split.

1. Fire evidence and conditions

Fire evidence: Mixed evidence — location does not change the cited classification.
Fire-performance conditions: No test or rating condition is normalized.
Fire ecology context: No section-reviewed fire-ecology context is normalized.
Placement evidence: 0 source placement records; source schemes remain separate.
Evidence regions: Global
Maintenance: No sourced horticultural maintenance assertion is normalized; fire-test conditions do not supply maintenance advice.

2. Why this plant is relevant here

State distribution: Documented in AZ, CA, NV, UT.
Native range: Current cited native range in AZ, CA, NV, UT.
Introduced / established: No introduced or established row is normalized; that does not prove native status.
USDA hardiness: Documented minimum 5b; no upper limit is documented.

3. Legal, ecological, and broader status

Legal-list status: Set a location for an exact legal-list result; source silence is not clearance.
Seed-list status: Set a location to compare the separate state noxious-weed seed layer.
Reported invasive here: No ecological invasive report is normalized; that does not prove noninvasiveness.
Broader regional context: Aggregate AK, HI, and L48 evidence is shown only as regional context, never as an exact-state finding.
Federal context: Federal designations remain separate from state legal-list results.

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.

Form: shrub
USDA hardiness: Minimum 5b; upper limit not documented
Mature height: ~2 ft
Water need: low
Current cited native range: AZ, CA, NV, UT
Grows in: AZ, CA, NV, UT
Rated in: Global
Family: Asteraceae
Evidence: 8 cited sources

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.

Current native

4

exact source areas

Current introduced

0

exact source areas

Qualified

0

doubtful or extinct source rows

4 native source areas · World Checklist of Vascular Plants, version 16 v16, as of 2026-06-04

Arizona (AZ)
California (CA)
Nevada (NV)
Utah (UT)

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.

USDA PLANTS Database — Plant Characteristics · record AMDU2 · PLANTS Help Document 2022; characteristics cache retrieved 2026-08-23 · as of 2026-08-26

Minimum 5b · no upper limit documented · half zone precision · derived containing band

Exact source measurement: -11°F; mapped only to its containing half-zone.

Source taxon: Ambrosia dumosa · source identifier match.

Source location: PlantCharacteristics record 31502, Temperature, Minimum (°F).

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.

Listed without a rating (8)

FLAMITS: FLAMmability plant traiTS database — Dryad / Global Ecology and Biogeography · Dryad version 9 · original source Corroboration Trait database lineage: meta-aggregator

8 cited rows from this source; its identity, lineage and tier are stated once.
- “rate of burning spread (cm/s): 0.12” · score 0.12 (FLAMITS — rate of burning spread (cm/s))
  
  FLAMITS record 3464; Sustainability measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.
- “flaming duration (s): 250.2” · score 250.2 (FLAMITS — flaming duration (s))
  
  FLAMITS record 3468; Sustainability measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.
- “burnt biomass (%): 83.3” · score 83.3 (FLAMITS — burnt biomass (%))
  
  FLAMITS record 3472; Consumability measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.
- “flame height (cm): 30.8” · score 30.8 (FLAMITS — flame height (cm))
  
  FLAMITS record 3476; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.
- “maximum flame temperature (°C): 837.7” · score 837.7 (FLAMITS — maximum flame temperature (°C))
  
  FLAMITS record 3480; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.
- “maximum flame temperature (°C): 779.6” · score 779.6 (FLAMITS — maximum flame temperature (°C))
  
  FLAMITS record 3484; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.
- “maximum flame temperature (°C): 724.6” · score 724.6 (FLAMITS — maximum flame temperature (°C))
  
  FLAMITS record 3488; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.
- “maximum flame temperature (°C): 572.4” · score 572.4 (FLAMITS — maximum flame temperature (°C))
  
  FLAMITS record 3492; Combustibility measurement; plant part litter; fuel all; predrying yes; device burning bench; site Fuentes2016-2; sampling june to july. Primary study Fuentes2016: Fuentes-Ramirez, A., Veldman, J. W., Holzapfel, C., & Moloney, K. A. (2016). Spreaders, igniters, and burning shrubs: plant flammability explains novel fire dynamics in grass-invaded deserts. Ecological Applications, 26, 2311-2322.

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Last verified 2026-08-25. JSON (CC BY 4.0)

Profiles: USDA PLANTS · GBIF ·

Ambrosia dumosa (Ambrosia dumosa). FireApproved. https://fireapproved.com/plants/ambrosia-dumosa/. Last verified 2026-08-25.