Smooth Aster vs Blue Grama Grass - TreeTime.ca

Smooth Aster vs Blue Grama Grass

Bouteloua gracilis

Symphyotrichum laeve

NOT AVAILABLE THIS SEASON - MIGHT RETURN

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Blue Grama Grass
Smooth Aster

Blue Grama is a native perennial bunchgrass recognized for its blue-green blades and unique seed heads. They grow along one side of the stem and are often compared to eyelashes, eyebrows, or mosquito larvae, which inspired its common names, Eyelash Grass and Mosquito Grass. As the seed heads begin to dry in the fall, they curl, further enhancing the plant’s distinctive appearance. The seeds provide food for birds, and the grass serves as a host plant for certain species of skipper butterflies.

As a warm-season grass, Blue Grama has a slow start in spring and does not actively grow until soil temperatures rise. Its deep roots help with erosion control, and the grass is drought-tolerant once established, thriving even in poor or alkaline soils. It is well-suited for soil stabilization, naturalization, restoration projects, or as an ornamental accent in gardens and landscapes.

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.

Blue Grama Grass Quick Facts

Smooth Aster Quick Facts

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


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


Native to: AB, BC, SK, MB
Native to: AB, BC, SK, MB, ON
Other Names: blue grama grass, eyelash grass, mosquito grass
Other Names: glaucous aster, smooth blue aster