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Philadelphia Fleabane
Erigeron philadelphicus
About Philadelphia Fleabane (Erigeron philadelphicus) Nurseries Show All Photos Erigeron philadelphicus, the Philadelphia fleabane, is a widespread North American plant in the daisy family. Also known as common fleabane, daisy fleabane, frost-root, marsh fleabane, poor robin's plantain, skervish, and in the British Isles as robin's-plantain. It is native to North America and found there in nearly all of the United States and Canada. It is also introduced into Europe and Asia, considered an invasive weed in many places. Erigeron philadelphicus is a herbaceous plant with alternate, simple leaves, on hairy stems. The flower heads are borne in spring in arrays of as many as 35 heads. Each head may sometimes contain as many as 400 pink or white ray florets surrounding numerous yellow disc florets. The blooms are less than one inch (2. 5 cm) in diameter. The stem is hairy with rough hairs. The middle to lower leaves are heart shaped, and the plant is about 0. 5-2. 5 ft (15-76 cm) tall. Its active growth period is from spring to summer (April to July). This plant grows on roadsides, in fields, in thickets, and in open woods.
Plant Description
Plant Type
Annual herb, Perennial herb

Max. Height
1.6 - 8.2 ft (0.49 - 2.5 m)


Growth Rate

Flower Color
White, Yellow

Flowering Season

Native Status

Natural Setting
Elevation ?
-74' - 6834'

Annual Precip. ?
2.0" - 133.0"

Summer Precip. ?
0.16" - 4.62"

Coldest Month ?
29.3° F - 60.9° F

Hottest Month ?
53.1° F - 88.9° F

Humidity ?
0.14 vpd - 47.23 vpd

Soil Description
Prefers loamy or clay soils. Grows poorly in sandy soils.

Landscaping Information
Common uses
Bee Gardens

Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Common Fleabane, Daisy Fleabane, Frost-root, Marsh Fleabane

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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