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Elymus arenarius carries an avoid recommendation in the evidence table. The conclusion belongs to blue lime grass at species rank, not to the entire elymus collection.
The available fire support remains limited evidence. The cited record defines that boundary without adding an unstated test result, condition, or broader grass-family claim.
Same-form alternatives are available through related plants, and the genus collection offers a wider taxonomic view. Those destinations supply no extra evidence for this recommendation; the alternatives and other elymus records retain their own source histories within this directory entry.
Ohio State University Extension Bulletin 921 is an Ohio publication that describes Ohio fire seasons and landscape conditions and labels nativity to Ohio. FireApproved publishes 352 exact source-owning plant records from its eight rated tables. This historical publication scope does not assert current extension endorsement or that a listed plant suits every Ohio site.
2. Why this plant is relevant here
State distribution
Documented in OH.
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.
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.
Firewise Landscaping: plant in Zone 2-3 or beyond [OSU B921 source-category siting] (with its avoid rating)
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.
