Water Sedge vs Smooth Aster - TreeTime.ca

Water Sedge vs Smooth Aster

Symphyotrichum laeve

Carex aquatilis

NOT AVAILABLE THIS SEASON - MIGHT RETURN

CUSTOM GROW

Smooth Aster
Water Sedge

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.

Water Sedge is a waterside grass which grows an extensive horizontal root system. This prevents erosion and allows it to grow back after being eaten.

Water sedge is grazed by many animals including cattle, sheep, horses and waterfowl. Animals choose Water Sedge for forage later in the year as it stays green longer than other plants, requiring you to buy feed for less of the year.

Smooth Aster Quick Facts

Water Sedge Quick Facts

Zone: 3a
Zone: 1a
Height: 0.9 m (3 ft)
Height: 0.9 m (3 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: wet
Growth rate: very fast
Growth rate: fast
Life span: short
Life span: short
Suckering: none
Suckering: medium


Foliage: long thin leaves
Flowers: purplish-blue; daisy-like
Flowers: green and brown
Bloom time: late summer to early fall
Seeds: achenes
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Other Names: glaucous aster, smooth blue aster
Other Names: leafy tussock sedge