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Hyparrhenia hirta is a keep away on this record. The record’s rating reason is limited evidence. Two ecological invasive reports sit beside that keep away; they are not a second fire recommendation.
The related plants jump beside this keep away stays so a substitute can be compared without erasing those invasive reports or the limited evidence rows.
Use evidence for the sourced keep away on Hyparrhenia hirta. The related list remains a separate jump. Keep away, limited evidence, and the two ecological invasive reports have to be read together on this sourced plant record.
3 sourced range or established records. This is not an invasive warning.
USDA hardiness
3. Legal, ecological, and broader status
Legal-list status
Seed-list status
Reported invasive here
2 ecological invasive reports.
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.
Native and introduced range evidence
These are exact U.S. botanical-area records from the cited range source. Native and
introduced describe biogeographic relationship, not fire performance or planting approval.
Doubtful and extinct rows stay visible but do not count as current presence.
The lossless worldwide derivative is retained once in the research corpus; object pages repeat only exact U.S. areas needed by the local lens. The JSON twin carries the same page assertions.
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.
Guía de pirojardinería: not suitable inside or outside the 25-metre maximum-risk zone [girona-2020-iuf-25m-suitability] (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.
Hyparrhenia hirta is rated “MUY DESACONSEJADA” by the guide's qualitative IUF garden-suitability method. The method assumes species-specific care and integrates fire evidence with fuel structure, maintenance, origin, invasiveness, and expert fire-service experience.
Listed without a rating (6)Corroboration (6 rows from 1 source)
6 cited rows from this source; its identity, lineage and tier are stated once.
Primary study Simpson2016: Simpson, K. J., Ripley, B. S., Christin, P. A., Belcher, C. M., Lehmann, C. E., Thomas, G. H., & Osborne, C P. (2016). Determinants of flammability in savanna grass species. Journal of Ecology, 104, 138-148.
Shared row context: plant part leaves; fuel live; device epiradiator; site Simpson2016-1; sampling july.
“time to flaming (s): 1.02”
FLAMITS record 12790; Ignitability measurement; predrying no.
“time to flaming (s): 1.28”
FLAMITS record 12791; Ignitability measurement; predrying yes.
“mass loss rate (g/s): 0.04”
FLAMITS record 12844; Combustibility measurement; predrying no.
“mass loss rate (g/s): 0.04”
FLAMITS record 12845; Combustibility measurement; predrying yes.
“flaming duration (s): 4.94”
FLAMITS record 12892; Sustainability measurement; predrying no.
“flaming duration (s): 4.76”
FLAMITS record 12893; Sustainability measurement; predrying yes.
