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Deerbrush
Ceanothus sp.
Your local evidence lens
Separate evidence questions, never one approval badge
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
- 1 source placement record; source schemes remain separate.
- Evidence regions
- Ashland, Oregon; Global; Nevada / Great Basin; Yavapai County, Arizona; western WA
- Maintenance
- No sourced horticultural maintenance assertion is normalized; fire-test conditions do not supply maintenance advice.
Typed publication scope: 4 scopes across 4 cited fire sources
- Prohibited Flammable Plants (Ashland Municipal Code 9.04) · Official scoped edition
- Firewise Plants for the Puget Sound Basin · Official scoped edition
- A Compilation of Good Plant Choices for Nevada's High Fire Hazard Areas (SP-05-16) · Official scoped edition
- Fire-Resistant and Fire-Prone Plants Common to Yavapai County (Bulletin 34) · Official scoped edition
2. Why this plant is relevant here
- State distribution
- Documented in AZ.
- Native range
- No current cited or legacy state native range is normalized.
- Introduced / established
- No introduced or established row is normalized; that does not prove native status.
- USDA hardiness
- No hardiness value is normalized.
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
- Grows in
- AZ
- Rated in
- Ashland, Oregon; Global; Nevada / Great Basin; Yavapai County, Arizona +1
- Family
- Rhamnaceae
- Evidence
- 28 cited sources
Where its sources say to plant it
- Prohibited Flammable Plants: new planting or propagation restricted within 30 ft of any structure
The evidence
Recommends (2)
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A Compilation of Good Plant Choices for Nevada's High Fire Hazard Areas (SP-05-16)
“listed by at least two cited sources”
Compilation marks: AZ1289, UCFPL 1997, CSU 6.305, MT200101AG, OSU FRN 6, USU NR/FF/002.
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Firewise Plants for the Puget Sound Basin
“Fire-resistant Landscape Plants”
Listed in the source's Shrubs table as Ceanothus spp. (Snowbrush or redstem).
Avoids (2)
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Prohibited Flammable Plants (Ashland Municipal Code 9.04)
“prohibited flammable plant”
The City of Ashland restricts new planting or propagation within 30 ft of any structure, including structures on adjacent lots (AMC 9.04).
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Fire-Resistant and Fire-Prone Plants Common to Yavapai County (Bulletin 34)
“Fire-Prone Plants”
Listed as Deerbrush — Ceanothus sp.. The bulletin says fire-resistant plants tend to resist ignition when irrigated and maintained, while fire-prone plants may ignite readily and burn intensely.
Listed without a rating (24)
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FLAMITS: FLAMmability plant traiTS database
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“time to flaming (s): 204”
FLAMITS record 13770; Ignitability measurement; plant part leaves; fuel live; predrying no; device calorimeter; site Weise2005-1; sampling august. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“time to flaming (s): 98”
FLAMITS record 13771; Ignitability measurement; plant part leaves; fuel live; predrying no; device calorimeter; site Weise2005-1; sampling december. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“maximum energy flux (kW/m²): 139”
FLAMITS record 13799; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site Weise2005-1; sampling august. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“maximum energy flux (kW/m²): 150”
FLAMITS record 13800; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site Weise2005-1; sampling december. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“calorific value (kcal/kg): 382.15”
FLAMITS record 13837; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site Weise2005-1; sampling august. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“calorific value (kcal/kg): 238.85”
FLAMITS record 13838; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site Weise2005-1; sampling december. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“maximum energy flux (kW/m²): 41”
FLAMITS record 13875; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site Weise2005-1; sampling august. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“maximum energy flux (kW/m²): 82”
FLAMITS record 13876; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site Weise2005-1; sampling december. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“calorific value (kcal/kg): 668.77”
FLAMITS record 13913; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site Weise2005-1; sampling august. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“calorific value (kcal/kg): 2030.19”
FLAMITS record 13914; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site Weise2005-1; sampling december. Primary study Weise2005: Weise, D. R., White, R. H., Beall, F. C., & Etlinger, M. (2005). Use of the cone calorimeter to detect seasonal differences in selected combustion characteristics of ornamental vegetation. International Journal of Wildland Fire, 14, 321-338.
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“energy flux (kW/m²): 25”
FLAMITS record 13986; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site White1996-1; sampling ND. Primary study White1996: White, R. H., Weise, D. R., & Frommer, S. (1996). Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. 21st International Conference on Fire Safety. Coimbra, Portugal.
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“energy flux (kW/m²): 72”
FLAMITS record 13995; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site White1996-1; sampling ND. Primary study White1996: White, R. H., Weise, D. R., & Frommer, S. (1996). Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. 21st International Conference on Fire Safety. Coimbra, Portugal.
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“maximum energy flux (kW/m²): 55”
FLAMITS record 14011; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site White1996-1; sampling ND. Primary study White1996: White, R. H., Weise, D. R., & Frommer, S. (1996). Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. 21st International Conference on Fire Safety. Coimbra, Portugal.
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“maximum energy flux (kW/m²): 138”
FLAMITS record 14012; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site White1996-1; sampling ND. Primary study White1996: White, R. H., Weise, D. R., & Frommer, S. (1996). Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. 21st International Conference on Fire Safety. Coimbra, Portugal.
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“maximum energy flux (kW/m²): 68”
FLAMITS record 14013; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site White1996-1; sampling ND. Primary study White1996: White, R. H., Weise, D. R., & Frommer, S. (1996). Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. 21st International Conference on Fire Safety. Coimbra, Portugal.
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“calorific value (kcal/kg): 979.26”
FLAMITS record 14014; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site White1996-1; sampling ND. Primary study White1996: White, R. H., Weise, D. R., & Frommer, S. (1996). Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. 21st International Conference on Fire Safety. Coimbra, Portugal.
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“calorific value (kcal/kg): 3534.91”
FLAMITS record 14046; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site White1996-1; sampling ND. Primary study White1996: White, R. H., Weise, D. R., & Frommer, S. (1996). Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. 21st International Conference on Fire Safety. Coimbra, Portugal.
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“calorific value (kcal/kg): 1218.11”
FLAMITS record 14056; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site White1996-1; sampling ND. Primary study White1996: White, R. H., Weise, D. R., & Frommer, S. (1996). Preliminary evaluation of the flammability of native and ornamental plants with the cone calorimeter. 21st International Conference on Fire Safety. Coimbra, Portugal.
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“calorific value (kcal/kg): 3988.73”
FLAMITS record 14158; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site White2002-1; sampling august. Primary study White2002: White, R. H., Weise, D. R., Mackes, K., & Dibble, A. C. (2002). Cone calorimeter testing of vegetation--an update. Ninth International Conference on Electrical and Electronic Products. Columbus, Ohio, USA.
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“calorific value (kcal/kg): 4203.69”
FLAMITS record 14159; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site White2002-1; sampling november. Primary study White2002: White, R. H., Weise, D. R., Mackes, K., & Dibble, A. C. (2002). Cone calorimeter testing of vegetation--an update. Ninth International Conference on Electrical and Electronic Products. Columbus, Ohio, USA.
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“maximum energy flux (kW/m²): 138”
FLAMITS record 14211; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site White2002-1; sampling august. Primary study White2002: White, R. H., Weise, D. R., Mackes, K., & Dibble, A. C. (2002). Cone calorimeter testing of vegetation--an update. Ninth International Conference on Electrical and Electronic Products. Columbus, Ohio, USA.
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“maximum energy flux (kW/m²): 149”
FLAMITS record 14212; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site White2002-1; sampling november. Primary study White2002: White, R. H., Weise, D. R., Mackes, K., & Dibble, A. C. (2002). Cone calorimeter testing of vegetation--an update. Ninth International Conference on Electrical and Electronic Products. Columbus, Ohio, USA.
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“maximum energy flux (kW/m²): 41”
FLAMITS record 14249; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site White2002-1; sampling august. Primary study White2002: White, R. H., Weise, D. R., Mackes, K., & Dibble, A. C. (2002). Cone calorimeter testing of vegetation--an update. Ninth International Conference on Electrical and Electronic Products. Columbus, Ohio, USA.
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“maximum energy flux (kW/m²): 82”
FLAMITS record 14250; Combustibility measurement; plant part leaves; fuel live; predrying no; device calorimeter; site White2002-1; sampling november. Primary study White2002: White, R. H., Weise, D. R., Mackes, K., & Dibble, A. C. (2002). Cone calorimeter testing of vegetation--an update. Ninth International Conference on Electrical and Electronic Products. Columbus, Ohio, USA.
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