Pennsylvania Cinquefoil vs Showy Milkweed - TreeTime.ca

Pennsylvania Cinquefoil vs Showy Milkweed

Potentilla pensylvanica

Asclepias speciosa

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Pennsylvania Cinquefoil
Showy Milkweed

Pennsylvania Cinquefoil is well suited for naturalisation projects as it is a wildflower native to North America. It is widespread and can be found growing in rocky soils at higher elevations in the mountains and foothills, as well as the dry prairies. The Pennsylvania Cinquefoil is capable of growing in cold, harsh conditions. The bright yellow flowers are found at the top of long stalks in small dense clusters and are ideal for attracting pollinators.

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.

Pennsylvania Cinquefoil Quick Facts

Showy Milkweed Quick Facts

Zone: 1a
Zone: 3a
Height: 0.2 m (0.5 ft)
Height: 0.9 m (3 ft)
Spread: 0.0 m (0.1 ft)
Spread: 0.5 m (1.5 ft)
Light: partial shade, full sun
Light: full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: upright, clump forming
Spreading: rhizomes - high, seeds - high
Suckering: medium
Maintenance: medium


Toxicity: toxic to pets, livestock, and humans if ingested, can cause skin and eye irritation.
Flowers: yellow
Flowers: purplish-pink clusters
Bloom time: early to mid summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, YT, NT
Native to: AB, BC, MB, YT
Other Names: prairie cinquefoil