Intermediate wheatgrass remains limited evidence, reflecting the narrow accepted pack. The sources defining that boundary can be reviewed in the documented entries, without treating the planting description as a broader test result.
The species is also on-list. Its recommendation is tied to the listing source, keeping the list status distinct from the California chaparral lineage.
Form
grass
Mature height
~2 ft
Water need
low
Rated in
California
On this lot
1. Fire evidence and conditions
Fire evidence
Fire-resistant — location does not change the cited classification.
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.