Erigeron philadelphicus

philadelphia fleabane, philadelphia daisy, fleabane daisy
Family

Asteraceae

Leaf Arrangement

alternate, basal (rosulate)

Leaf Attachment

clasping

Leaf Margin

crenate, lobed, serrate

Leaf Type

simple

Leaf Shape

elliptic, oblanceolate, obovate

Growth Form

forb

Flower Color

purple, white, yellow

Flower Petals

many

Flower Month

March - July

Height (meters)

0.2 - 1.2

Milky Sap

No

Armed/Unarmed

Unarmed

Origin

native

Lifespan

biennial, perennial

Growing Season

Cool season


Wetland Class

FAC

Prairie Coefficient of Conservatism

0

Field Characters

Similar to E. strigosus and E. annuus but has leaves that clasp the stem at their base and flowers borne on peduncles that are lax, often hanging downward (see photo). It does not have rhizomes as does E. strigosus.

Cultural Information

For most Asteraceae only a small percentage of seeds develop and germination is sparse. The seed usually ripens fast after flowering so begin checking when the pappus starts to darken and seeds are brown. Dry for 2-3 days then store in cool, dry conditions. This species is considered a weed and should appear in restoration without planting.

Natural History

As all members of this genera, E. philadelphicus grows on a wide range of soil types. It is found in old fields, roadsides, and lawns. It is eaten by livestock only when it is in very early stages and is an increaser under heavy grazing. As perennials become reestablished E. philadelphicus will decrease in abundance making it a good indicator of the condition of a prairie plant community. The Acadians of south Louisiana called daisy fleabane "vergerolle," which is a corruption of vergerette, the name used for this genus in Quebec (Holmes 1990).

Habitat

Old meadows and waste ground.