Enter your ZIP to see whether this is legal to plant in your state, and whether it survives your winter.
Eastern pasqueflower is generally rated fire resistant, though one field-trial score is less decisive than the planting lists.
Oregon State, Washington State, and University of Idaho extension services list Pulsatilla patens as fire resistant. Oregon State also profiles it among fire-resistant perennials suited to Willamette Valley growing conditions, while FireSmart BC includes it on its approved fire-resistant plant chart. These are expert-curated or compiled recommendations, so their agreement is useful for choosing plants even though it is not the same as a controlled flammability test.
Idaho Firewise supplies the main qualification. Its field-trial database gives eastern pasqueflower a fire-resistance score of 7 out of 10. Under the published use of that scale, scores from 4 through 7 fall in the mixed band, while 8 through 10 are recommended. The score therefore supports some resistance but stops short of the scale’s strongest recommendation.
Taken together, the guidance favors calling eastern pasqueflower fire resistant, with the Idaho result tempering rather than overturning that conclusion. It is a perennial in the buttercup family, Ranunculaceae, and its published hardiness range is USDA zones 3a through 7b. For a homeowner, the practical reading is favorable but not absolute: several regional programs recommend the plant, while the available field score places it at the upper edge of a mixed rating.
Form
perennial
Rated in
British Columbia; OR/WA/ID; Oregon (Willamette Valley); Pacific Northwest (Oregon / Washington / Idaho) +1
On this lot
1. Fire evidence and conditions
Fire evidence
Fire-resistant — location does not change the cited classification.
Southern Idaho (ID footprint); partial normalized coverage · 2013-11-08
The official database labels itself "For Southern Idaho" and describes Idaho residents at the urban-rangeland interface. FireApproved publishes 419 existing plant owners that cite its scored rows. This bounded Southern Idaho scope is regional context, not statewide coverage or a conclusion that the score transfers unchanged to every Idaho site.
Willamette Valley (OR footprint); partial normalized coverage · 2015-02-01
OSU Extension says EM 9103 highlights fire-resistant plants that thrive under Willamette Valley growing conditions. FireApproved publishes 172 exact owners only as valley context. The guide shares the PNW 590 lineage and is not a second independent vote or statewide site clearance.
The October 2023 joint Pacific Northwest Extension publication explicitly names Oregon, Washington, and Idaho and publishes more than 150 plant profiles. FireApproved has normalized 155 exact plant records from the source; publication scope does not assert that every listed plant suits every site within the three states.
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.
3–7 explicit range · whole zone precision · source stated
Source taxon: Pulsatilla patens · exact match.
Source location: Pasque flower profile, USDA hardiness zones field.
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.
Fire Resistance of Plants Master Database: plantable at 40' from home [Idaho minimum planting distance] (mid-scale rating)
FireSmart BC Plant Program: suitable for HIZ extended zone (30-100 m) [FireSmart BC Home Ignition Zone] (with its recommendation)
Fire-resistant Landscape Plants for the Willamette Valley: Pasque Flower profile (PDF page 74) [osu-em-9103-profile] (with its recommendation)
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.
