Smooth Aster vs Hairy Golden Aster - TreeTime.ca

Smooth Aster vs Hairy Golden Aster

Symphyotrichum laeve

Heterotheca villosa

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Smooth Aster
Hairy Golden Aster

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.

Hairy Golden Aster is a native perennial wildflower known for its clusters of bright yellow, daisy-like blooms. They bloom from mid-summer into fall, providing late-season colour and a valuable nectar source for pollinators, including a variety of bee species.

Flowers mature into fluffy seed heads and can self-seed readily. Removing spent blooms helps manage their spread, but some people will choose to leave a few seed heads to provide food for birds. Hairy Golden Aster grow in bushy clumps, tolerates poor sandy soils, and once established, are among the most drought-tolerant wildflowers. They are well-suited for pollinator gardens, restoration, naturalization, and xeriscaping projects.

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

Hairy Golden Aster Quick Facts

Zone: 3a
Zone: 3a
Height: 0.9 m (3 ft)
Height: 0.5 m (1.5 ft)
Spread: 0.6 m (2.0 ft)
Spread: 0.5 m (1.5 ft)
Light: partial shade, full sun
Light: full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: very fast
Growth rate: fast
Life span: short
Life span: short
Growth form: upright, clump-forming
Spreading: seeds - high, rhizomes - medium
Suckering: none
Maintenance: medium


Flowers: purplish-blue; daisy-like
Flowers: bright yellow, daisy-like
Bloom time: late summer to early fall
Bloom time: mid summer to early fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Other Names: glaucous aster, smooth blue aster
Other Names: hairy false golden aster, hairy false goldenaster, hairy goldenaster