Wildflower Archive

woodland wildflower

Aspen fleabane

Erigeron speciosus

Also known as Showy Fleabane

Aspen fleabane (Erigeron speciosus)1 of 2
Biodiversity Heritage Library

Native to the Southwest, the Rockies, and the Pacific Coast and southern Canada

Alberta to southern British Columbia, south to New Mexico and Arizona; also Black Hills and adjacent Wyoming

  • Light Full sun Sun tolerance
  • Moisture Moisture preference
  • Zones 2–9 Cold to heat range
  • Bloom Jun–Sep Flowering time
  • Height up to 3 ft to 0.9 m
  • Life cycle Perennial Annual to perennial
Full details, see below

In the garden

A woodland wildflower for full sun. Its white flowers peak in July. At up to 3 ft, it suits shade gardens and woodland edges. Hardy in USDA zones 2–9.

Growing conditions

Light
Full sun Partial shade Full shade
Moisture
Dry Moist Wet

Hardiness zones

Find your zone:

When it blooms

The Aspen fleabane's white flowers bloom June to September, peaking in July. This midsummer display draws bees and butterflies.

Jun–SepJanFebMarAprMayJunJulAugSepOctNovDec

Aspen fleabane blooms white, yellow, blue & purpleFoliage

Pollinators & wildlife

  • Bees Yellow-faced Bumble Bee
    also Western Honey Bee, Ligated Furrow Bee, Black-tailed Bumble Bee +47 more Bombus fervidus, Red-belted Bumble Bee, Hunt's Bumble Bee, Fuzzy-Horned Bumble Bee, Two-form Bumble Bee, Orange-legged Furrow Bee, Yellow-fronted Bumble Bee, Tripartite Sweat Bee, California Bumble Bee, Nevada Bumble Bee, Great Basin Bumble Bee, Confusing Furrow Bee, Nearctic Bumble Bee, Yellowish Cuckoo Bumble bee, Sitka Bumble Bee, Indiscriminate Cuckoo Bumble Bee, Orange-tipped Wood-digger, Pugnacious Leafcutter Bee, White-shouldered Bumble Bee, Western Bumble Bee, Forest Bumble Bee, Bufflehead Mason Bee, Ceratina acantha, Green Small-Mason, frigid bumble bee, Golden-tailed Leafcutter Bee, Colorado Mason, Black-fronted turret bee, Osmia montana, Annulate Masked Bee, Incomplete Sweat Bee, Tiny Small carpenter, Heriades variolosa, Nevada Sweat Bee, Knerer's Sweat Bee, Inept Miner Bee, Costilla Miner Bee, Comma Sweat Bee, Osmia grindeliae, Panurginus cressoniellus, Andrena apacheorum, Ceratina neomexicana, Small Long-horned Bee, Melissodes lupinus, Hoplitis pilosifrons, Ceratina micheneri, Megachile pugnata pomonae
  • Butterflies Red Admiral
    also Pearl Crescent, Gray Hairstreak, American Lady +56 more Orange Sulphur, Clouded Sulphur, Checkered White, Common Wood-Nymph, Dun Skipper, Dainty Sulphur, Woodland Skipper, Silvery Blue, Green Comma, Northern Checkerspot, Atlantis Fritillary, Western White, Clodius Parnassian, Arctic Fritillary, Taxiles Skipper, Tailed Copper, Garita Skipperling, Mottled Duskywing, Mead's Sulphur, Northern Grizzled Skipper, Camillus Crescent, Ross's Alpine, Common Branded Skipper, Lycaena cupreus, Speyeria mormonia, Speyeria atlantis, Colias alexandra, Coenonympha pamphiloides, Emesis zela, Speyeria atlantis hesperis, Speyeria atlantis sorocko, Epidemia dorcas florus, Phyciodes batesii anasazi, Charon Satyr, Titania's Fritillary, Sagebrush Sooty Hairstreak, Plebejus glandon, Blue Copper, Greenish Blue, Cercyonis oetus, Leonard's Skipper, Strymon saepium, Plebejus saepiolus, Epidemia helloides, Lycaena heteronea, Speyeria zerene, Speyeria aphrodite, Speyeria coronis, Pine White, Cynthia cardui, Clossiana improba, Parnassius smintheus smintheus, Snow's Copper, Magdalena Alpine, Chlosyne palla whitneyi, Lilac-bordered Copper
  • Flower flies Margined Calligrapher
    also Eurasian Drone Fly, Large-tailed Aphideater, Yellow-shouldered Drone Fly +13 more Western Calligrapher, Forked Globetail, Black-footed Globetail, Poecilanthrax tegminipennis, Spot-winged Pond Fly, Villa harveyi, Narrow-banded Meadow Fly, Eurasian Smoothwing, Villa fulviana, grasshopper bee fly, Platycheirus stegnus, Paragus tibialis, Eupeodes lapponicus
  • Also visited by
    • Moths: Lycaena rubidus sirius, Lycaena rubidus
    • Wasps: Western Yellowjacket
    • Beetles: Convergent Lady Beetle

Butterflies that use this plant

Documented host and nectar records. Each links to a planting guide for that butterfly.

Full plant details

Where it grows

Habitat
WoodlandThe wild plant community it grows in.
Native range
The Southwest, the Rockies, and the Pacific Coast and southern CanadaUnited States (11): AZ, CO, ID, MT, NM, NV, OR, SD, UT, WA, WY. Canada (2): AB, BC. Where it grows wild on its own, by state and province.
Native distribution
Alberta to southern British Columbia, south to New Mexico and Arizona; also Black Hills and adjacent WyomingThe same native range, usually more exact than the state list, and often noting where it has spread beyond it.

Growing conditions

Light
Full sunHow much sun it takes, from full sun to full shade.
Hardiness zones
USDA 2–9 · Canadian 1–8The cold-to-heat climate range it survives.
Soil
Dry to moist soilsThe soils it grows in naturally.

Growth & form

Height
up to 3 ft (to 0.9 m)Typical mature height.
Life cycle
PerennialWhether it lives a single season (annual), two (biennial), or returns for years (perennial).

Flowers, foliage & fruit

Type
WildflowerWhat kind of plant it is.
Bloom
Jun–SepWhen it flowers.
Flower color
White, Yellow, Blue, PurpleThe bloom color, or colors.
Toxicity
None knownWhether any part is poisonous to people or pets.