Showy Aster vs Showy Milkweed - TreeTime.ca

Showy Aster vs Showy Milkweed

Asclepias speciosa

Eurybia conspicua

NOT AVAILABLE THIS SEASON - MIGHT RETURN

CUSTOM GROW

Showy Milkweed
Showy Aster

Showy Milkweed is a native perennial wildflower known for its fragrant clusters of pink to purple, star-shaped flowers. It is an essential plant for Monarch butterflies, acting as a critical host plant for caterpillars and a nectar source for adults. Blooming from early to mid-summer, these flowers also supply nectar to many other pollinators, including bees, butterflies, moths, and hummingbirds.

Ideal for butterfly conservation, pollinator gardens, and naturalization projects, Showy Milkweed thrives in a wide range of soils, including dry and rocky ground. While it spreads via underground rhizomes to form colonies, it is much less aggressive than Common Milkweed (Asclepias syriaca).

Note: All parts of the plant contain toxic cardiac glycosides, especially the milky sap. Do not ingest any part of the plant and prevent sap from contacting skin or eyes. Toxic to humans, pets, and livestock.

Showy Aster is a native perennial wildflower recognized for its tall stems topped with clusters of light purple blooms. Blooming from late summer into autumn, it provides an important late-season source of nectar and pollen for pollinators. It also produces seeds that are eaten by birds, extending its value to wildlife beyond the flowering season.

Drought tolerant once established, Showy Aster grows well in urban, rural, and disturbed sites. With its mix of ecological value and ornamental appeal, it is ideal for pollinator gardens, naturalization projects, and ecological restoration.

Showy Milkweed Quick Facts

Showy Aster Quick Facts

Zone: 3a
Zone: 2b
Height: 0.9 m (3 ft)
Height: 0.6 m (2.0 ft)
Spread: 0.5 m (1.5 ft)
Spread: 0.5 m (1.5 ft)
Light: full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: any
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: upright, clump forming
Growth form: upright, colony-forming
Spreading: rhizomes - high, seeds - high
Spreading: rhizomes - medium, seeds - medium
Maintenance: medium

Toxicity: toxic to pets, livestock, and humans if ingested, can cause skin and eye irritation.

Flowers: purplish-pink clusters
Flowers: purple-blue, with yellow centers
Bloom time: early to mid summer
Bloom time: late summer to early fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, MB, YT
Native to: AB, BC, SK, MB
Other Names: western showy aster