Ten seed-list rows are documented under the seed list. Their regulatory sourcing remains separate from the combustion lineage for sheep sorrel.
The three ecological invasive reports accompany those fire and seed-list facts. They remain ecological evidence in the profile, while the evidence table preserves the source trail for the selected combustion study. Their role does not alter the cured condition or the ten-row seed-list count.
Form
perennial
Rated in
Global; New Zealand; north-eastern and mid-Atlantic United States
Uses
pasture
On this lot
1. Fire evidence and conditions
Fire evidence
Fire-resistant — 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
Global; New Zealand; north-eastern and mid-Atlantic United States
Maintenance
Typed publication scope: 1 scope across 1 cited fire source
Northeastern and mid-Atlantic study sites (ME, MD, MA, NY, VA footprint); partial normalized coverage · 2007-08-20
The authors collected foliage and twigs across study sites in Maine, Maryland, Massachusetts, New York, and Virginia, then conditioned and tested the samples in a cone calorimeter. FireApproved publishes 37 exact source owners only as multi-state laboratory context. The source does not establish that every taxon was sampled in every named state, whole-plant behavior, landscape suitability, or state planting guidance.
2. Why this plant is relevant here
State distribution
Documented in AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY.
Native range
Introduced / established
52 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
10 state noxious-weed seed records; the Place chip matches exact scope.
Reported invasive here
3 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.
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.
Recommends (2)
Low Flammability Plants directory — Fire and Emergency New Zealand (plant flammability testing at Lincoln University) · 2026 · original sourcePrimary evidenceLab-testedlineage: lincoln-nz-tree
9 cited rows from this source; its identity, lineage and tier are stated once.
Primary study Cui2020a: Cui, X., Paterson, A. M., Wyse, S. V., Alam, M. A., Maurin, K. J. L., Pieper, R., ... Curran, T. J. (2020a). Shoot flammability of vascular plants is phylogenetically conserved and related to habitat fire-proneness and growth form. Nature Plants, 6, 355-359.
Shared row context: plant part branches; fuel all; predrying yes; device grill; site Cui2020a-1; sampling ND.
“ignition frequency (%): 20”
FLAMITS record 1499; Ignitability measurement.
“maximum sample temperature (°C): 180.5”
FLAMITS record 1693; Combustibility measurement.
“burning duration (s): 0.4”
FLAMITS record 1887; Sustainability measurement.
“estimated burnt biomass (%): 20”
FLAMITS record 2081; Consumability measurement.
“calorific value (kcal/kg): 2101.84”
FLAMITS record 2889; Combustibility measurement; plant part leaves; fuel live; predrying yes; device calorimeter; site Dibble2007-1; sampling ND. Primary study Dibble2007: Dibble, A. C., White, R. H., & Lebow, P. K. (2007). Combustion characteristics of north-eastern USA vegetation tested in the cone calorimeter: invasive versus non-invasive plants. International journal of wildland fire, 16, 426-443.
Primary study Padulles2018: Padullés-Cubino, J., Buckley, H. L., Day, N. J., Pieper, R., & Curran, T. J. (2018). Community-level flammability declines over 25 years of plant invasion in grasslands. Journal of Ecology, 106, 1582-1594.
Shared row context: plant part whole plant; fuel all; predrying yes; device grill; site Padulles2018-1; sampling 1982 to 2007.
