Agropyron trichophorum (accepted: Thinopyrum intermedium) · Poaceae · all Agropyron records · also called Pubescent wheatgrass · syn. Agropyron trichophorum · Wikipedia
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The 1977 clearing-vegetation source is represented here for Agropyron trichophorum, or pubescent wheatgrass. Its Table 2 prints the grass among species recommended for fuelbreak sites located in California, which is why the record is on-list in the evidence table.
One recommendation supports that status, so the page marks the result as limited evidence. The citation records a fuelbreak recommendation; it does not turn the source into a universal performance statement.
Documented in AZ, CA, CO, GA, IA, ID, MA, MT, ND, NE, NJ, NM, NV, NY, OR, SD, TX, UT, WA, WY.
Native range
Introduced / established
USDA hardiness
Documented minimum 3b; no upper limit is documented.
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.
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 25997, 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.
Low-volume and slow-burning vegetation for planting on cl…: Table 2: Grass species recommended for fuelbreak sites in California [nord-green-brushland-clearing-performance] (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.