Panicle Hydrangea vs Smooth Aster - TreeTime.ca

Panicle Hydrangea vs Smooth Aster

Symphyotrichum laeve

Hydrangea paniculata

NOT AVAILABLE THIS SEASON - MIGHT RETURN

CUSTOM GROW

Smooth Aster
Panicle Hydrangea

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.

Panicle Hydrangea is a large, broad-leaf, deciduous shrub that is prized for its ornamental appeal. It is easy to care for, long-lived, and cold-hardy.

Depending on the variety, its flowers change color throughout the blooming period. Make sure you water Panicle Hydrangeas regularly to achieve the most notable color change.

Smooth Aster Quick Facts

Panicle Hydrangea Quick Facts

Zone: 3a
Zone: 3a
Height: 0.9 m (3 ft)
Height: 6 m (20 ft)
Spread: 0.6 m (2.0 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal
Growth rate: very fast
Growth rate: fast
Life span: short
Life span: short
Suckering: none
Suckering: medium


Flowers: purplish-blue; daisy-like
Flowers: white, strong scent, very showy
Bloom time: late summer to early fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON
Other Names: glaucous aster, smooth blue aster
Other Names: white panicle hydrangea