Royal Star Magnolia vs Smooth Aster - TreeTime.ca

Royal Star Magnolia vs Smooth Aster

Magnolia stellata Royal Star

Symphyotrichum laeve

NOT AVAILABLE THIS SEASON

(we don't know if or when this product will be restocked)

NOT AVAILABLE THIS SEASON

(new stock expected: fall of 2025)

Royal Star Magnolia
Smooth Aster

The Royal Star Magnolia, or Star Magnolia, is an early-blooming, white fragrant flower. It has a form that resembles a starburst, hence the name. This multi-stemmed deciduous shrub is extremely popular and has won the prestigious Award of Garden Merit from the Royal Horticultural Society.

The Royal Star Magnolia attracts birds and butterflies to your garden, with their large, showy flowers blooming even before it’s foliage which features a medium green leaf. They prefer slightly acidic soils.

Staff Favorite!

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.

Royal Star Magnolia Quick Facts

Smooth Aster Quick Facts

Zone: 4a
Zone: 3a
Height: 5 m (15 ft)
Height: 0.9 m (3 ft)
Spread: 3 m (10 ft)
Spread: 0.6 m (2.0 ft)
Moisture: normal, wet
Moisture: dry, normal
Light: partial shade, full sun
Light: partial shade, full sun
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no
Flowers: lare, white, showy
Flowers: purplish-blue; daisy-like
Growth rate: medium
Growth rate: very fast
Life span: medium
Life span: short
Suckering: high
Suckering: none




Other Names: star magnolia
Other Names: glaucous aster, smooth blue aster