Philadelphia Fleabane

Erigeron philadelphicus

Pollinator plant

Growing it

When	Flowers May to July
Type	wildflower
Sun	Full sun, partial shade
Water	Low, medium
Soil	pH 5.5–7.5
Hardiness	zone 2–8
Mature height	0.6 m
Mature spread	0.45 m
Spacing	0.3 m
Years to maturity	2
Bloom	May–Jul
Flower colour	Pink White read from a published flora
In bloom	May June July
Native to	AB, SK

Where it has been recorded

BothSpecimensObservations

196 squares of about 28 km, each holding at least one record. A square is not a claim that the plant grows throughout it, and an unshaded square is unrecorded rather than empty. Darker squares hold more records, which follows roads and towns as much as it follows the plant. 78 herbarium specimens and 385 field observations this project may redraw. A filled dot is a pressed sheet somebody can re-examine; a hollow ring is a photograph identified by community agreement. Where the dots are dense is where people have looked, not where the plant is commonest, and empty ground is unsurveyed rather than unoccupied. How this map is made.

Which ecoregions the records fall in

Aspen Parkland central AB / SK: 320 records, high confidence
Boreal Transition central AB / SK: 95 records, high confidence
Mid-Boreal Uplands central AB / SK: 63 records, high confidence
Fescue Grassland south AB: 34 records, high confidence
Moist Mixed Grassland south AB / SK: 22 records, high confidence
Slave River Lowland north AB: 16 records, medium confidence
Peace Lowland north AB: 12 records, medium confidence
Wabasca Lowland north AB: 10 records, medium confidence
Western Alberta Upland central AB: 9 records, medium confidence
Cypress Upland south AB / SK: 7 records, low confidence
Northern Continental Divide south AB: 5 records, low confidence
Mixed Grassland south AB / SK: 4 records, low confidence
Western Boreal central AB: 3 records, low confidence

These are counts of records collected somewhere in the region, which is the resolution of the evidence: the map above shows where inside it. A region with 3 records is not the same claim as one with three hundred, so the count travels with the region. A region missing from this list means nobody has recorded it there, which is not the same as the plant being absent. Records within 900 m of a border count for neither side, because the border is not drawn finely enough to say which one they are on. Source: GBIF occurrence search + PRESERVED_SPECIMEN pass, retrieved 2026-08-24. Boundaries digitised from the National Ecological Framework for Canada v2.2 (Ecological Stratification Working Group 1995), simplified to about 900 m for display: an outline is accurate to roughly a kilometre, not to the metre. How these counts are made.

See every observation, live and current, on GBIF or iNaturalist.

Documented animals

63 documented relationships.

nectar for

A Flower Fly Acorn
Agapostemon splendens Specimen records from iNaturalist.org
Allograpta obliqua Specimen records from iNaturalist.org
American Lady Specimen records from iNaturalist.org
Anania funebris Specimen records from iNaturalist.org
Arctic Skipper Specimen records from iNaturalist.org
Articulated Cuckoo Nomad Bee Specimen records from iNaturalist.org
Atlantis Fritillary Specimen records from iNaturalist.org
Bicoloured Sweat Bee Specimen records from iNaturalist.org
Black-shouldered Drone Fly Specimen records from iNaturalist.org
Brown-belted Bumble Bee Specimen records from iNaturalist.org
Calligrapher Fly Specimen records from iNaturalist.org
Callophrys augustinus Specimen records from iNaturalist.org
Ceratina calcarata Specimen records from iNaturalist.org
Chalcosyrphus piger Specimen records from iNaturalist.org
Clouded Sulphur Specimen records from iNaturalist.org
Drone Fly Specimen records from iNaturalist.org
Eastern Calligrapher Specimen records from iNaturalist.org
Eastern Pine Elfin Specimen records from iNaturalist.org
Eastern Tailed-Blue Specimen records from iNaturalist.org
Erynnis brizo Specimen records from iNaturalist.org
Euodynerus foraminatus Specimen records from iNaturalist.org
Euodynerus hidalgo Specimen records from iNaturalist.org
Evodinus monticola Specimen records from iNaturalist.org
Gray Hairstreak Specimen records from iNaturalist.org
Great Spangled Fritillary Specimen records from iNaturalist.org
Half-black Bumble Bee Specimen records from www.bumblebeewatch.org
Halictus confusus Specimen records from iNaturalist.org
Halictus ligatus Specimen records from iNaturalist.org
Harmostes reflexulus Specimen records from iNaturalist.org
Helophilus fasciatus Specimen records from iNaturalist.org
Hemaris gracilis Specimen records from iNaturalist.org
Hobomok Skipper Specimen records from iNaturalist.org
Holcopasites calliopsidis Specimen records from iNaturalist.org
Hylaeus modestus Specimen records from scan-bugs.org
Lasioglossum pectorale Specimen records from iNaturalist.org
Lygaeus kalmii Specimen records from iNaturalist.org
Mallota bautias Specimen records from iNaturalist.org
Mallota posticata Specimen records from iNaturalist.org
Megachile rotundata Specimen records from iNaturalist.org
Mourning Cloak Specimen records from iNaturalist.org
Mustard White Specimen records from iNaturalist.org
Northern Crescent Specimen records from iNaturalist.org
Pearl Crescent Specimen records from iNaturalist.org
Peck's Skipper Specimen records from iNaturalist.org
Philanthus ventilabris Specimen records from iNaturalist.org
Plateumaris shoemakeri Specimen records from iNaturalist.org
Raspberry Fruitworm Specimen records from iNaturalist.org
Red Admiral Specimen records from iNaturalist.org
Red-belted Bumble Bee Specimen records from www.bumblebeewatch.org
Silvery Blue Specimen records from iNaturalist.org
Sphaerophoria contigua Specimen records from iNaturalist.org
Spotted Cucumber Beetle Specimen records from iNaturalist.org
Stelis coarctatus Specimen records from iNaturalist.org
Tarnished Plant Bug Specimen records from iNaturalist.org
Two-ranked Bumble Bee Specimen records from www.bumblebeewatch.org
Virginia Ctenucha Specimen records from iNaturalist.org
Yellow-collared Scape Moth Specimen records from iNaturalist.org

pollen for

Eucerceris cressoni Robertson 1929
Halictus ligatus Robertson 1929
Morellia micans Robertson 1929
Pseudopanurgus parvus Robertson 1929
Volucella bombylans Robertson 1929

Also worth knowing

Safety

Toxicity not assessed, absence of a warning is not a guarantee of safety

Buying it

About $8–$16 per plant (estimate), usually from a native-plant nursery. Estimate (herb default); AB retail as of 2026

Where these numbers came from

Flower detail: not verified, a genus-level estimate