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Buckwheat cannot be called reliably fire resistant because California and Arizona sources place Eriogonum species on opposite lists.
Fire Safe Marin includes buckwheat among fire-resistant plants common to Marin County. Its guidance says plant choice alone is not enough: placement, spacing, irrigation, and removal of dead material remain necessary.
The University of Arizona Cooperative Extension in Yavapai County reaches the opposite conclusion, placing Buckwheat, Eriogonum sp., among fire-prone plants. The bulletin warns that fire-prone plants may burn intensely as well as ignite readily. It also explains that even plants on its resistant list require irrigation and maintenance and are not fireproof.
Both address the same genus-level name and both use named, expert-curated lists, yet one recommends it and the other warns against it. For a homeowner, the practical conclusion is uncertainty: buckwheat has some support as a fire-resistant landscape plant in Marin County, but the Arizona warning is strong enough that it should not be treated as reliably resistant everywhere.
Form
perennial
Rated in
Marin County, California; Yavapai County, Arizona
On this lot
1. Fire evidence and conditions
Fire evidence
Mixed evidence — location does not change the cited classification.
Fire-performance conditions
1 condition stated in cited fire-evidence rows.
Fire ecology context
Placement evidence
Evidence regions
Marin County, California; Yavapai County, Arizona
Maintenance
Typed publication scope: 2 scopes across 2 cited fire sources
Marin County (CA footprint); partial normalized coverage · 2019-01-01
The publication is explicitly limited to plants common to Marin County. FireApproved publishes 104 exact owners as Marin regional context while retaining its placement, spacing, irrigation, and maintenance boundary. It is not statewide California guidance or parcel suitability.
Yavapai County (AZ footprint); partial normalized coverage · 2025-03-14
University of Arizona Cooperative Extension authors Bulletin 34 for Yavapai County. FireApproved publishes 198 exact source owners from its resistant and prone tables and keeps the county boundary visible. County publication scope is regional Arizona context, never statewide scope.
2. Why this plant is relevant here
State distribution
Documented in AZ.
Native range
Introduced / established
USDA hardiness
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.
Conditions in the fire evidence
These describe tested or rated plant material. They are not horticultural maintenance instructions.
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 as Buckwheat — Eriogonum 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.
