Smooth Aster vs Upright Prairie Coneflower - TreeTime.ca

Smooth Aster vs Upright Prairie Coneflower

Symphyotrichum laeve

Ratibida columnifera

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Smooth Aster
Upright Prairie Coneflower

Smooth Aster is a native perennial wildflower known for its violet-blue, daisy-like flowers. They bloom later in the season, from late summer to early fall. The flowers attract a variety of pollinators, including bees, butterflies, and other beneficial insects. It also serves as a host plant for the Silvery Checkerspot (Chlosyne nycteis) and Pearl Crescent (Phyciodes tharos) butterflies, further enhancing its ecological value. This easy-to-grow wildflower is well suited for native wildflower gardens, pollinator gardens, and naturalization projects.

The Smooth Aster’s non-aggressive root system allows it to spread slowly, and it is more likely to reproduce by seed, which can be controlled through deadheading. As a perennial, it dies back to the crown each winter, it will regrow from the base in the spring. Avoid disturbing the crown during late winter to ensure healthy growth the following season.

Upright Prairie Coneflower is a native perennial wildflower known for its vibrant flowers, which range from golden yellow to dark rust-red with yellow edges. Rising on tall, slender stems, the flowers’ drooping petals surround a central cone. They bloom from midsummer into fall, attracting butterflies, bees, and other pollinators. After blooming, the florets on the cone eventually develop into seeds, which provide a food source for birds.

Its upright growth habit allows it to grow in clusters, creating a striking display. Due to its deep taproot, Upright Prairie Coneflower is drought tolerant, making it well suited to dry areas and xeriscape gardens. Low-maintenance and deer-resistant, this wildflower is a great choice for adding vibrant color and ecological value to any landscape.

As a perennial, it dies back to the crown each winter, it will regrow from the base in the spring. Avoid disturbing the crown during late winter to ensure healthy growth the following season.

Smooth Aster Quick Facts

Upright Prairie Coneflower Quick Facts

Zone: 3a
Zone: 3b
Height: 0.9 m (3 ft)
Height: 0.6 m (2.0 ft)
Spread: 0.6 m (2.0 ft)
Spread: 0.5 m (1.5 ft)
Moisture: dry, normal
Moisture: dry, normal
Light: partial shade, full sun
Light: full sun
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no
Flowers: purplish-blue; daisy-like
Flowers: golden yellow sometimes with red-brown; has long central cone
Growth rate: very fast
Growth rate: very fast
Life span: short
Life span: short
Maintenance: medium
Suckering: none
Suckering: none




Other Names: glaucous aster, smooth blue aster
Other Names: long-headed coneflower, prairie coneflower, red-spike mexican-hat, yellow prairie coneflower