• Photo of Symphyotrichum laeve (Symphyotrichum laeves)

Plant Profile: Symphyotrichum laeve

Taxonomy: Symphyotrichum laeve

Names

Smooth Aster, Smooth Blue Aster

  • Photo of Symphyotrichum laeve (Symphyotrichum laeves)

Phonetic Spelling:sim-fy-oh-TRY-kum LAY-vey

Genus:Symphyotrichum

Species:laeve

Family:Asteraceae

Smooth Aster is a perennial herb belonging to the aster family, found primarily in the central and eastern regions of the United States. This plant is an essential addition to any garden, celebrated for its late-season flowering and its ability to attract a variety of pollinators. Reaching heights of 2 to 4 feet, it showcases clusters of daisy-like flowers in a striking purplish-blue hue from September through late fall.

Asters thrive in well-drained, average garden soil and prefer full sun to partial shade. Once established, they are drought-tolerant, making them a resilient choice for borders, pollinator gardens, or naturalized settings. Additionally, they have a tendency to self-seed, ensuring their presence in your garden year after year.

Symphyotrichum laeve Feature Summary

Symphyotrichum laeve Image Gallery

Tags

#showy flowers
#fall color
#perennial
#wildlife plant
#nectar plant
#native bees
#fall interest
#small mammals
#specialized bees
#herb garden
#food source
#NC native
#native garden
#pollinator plant
#native wildflower
#wildflower garden
#larval host plant
#food source winter
#food source fall
#food source herbage
#food source nectar
#food source pollen
#coastal UPL
#bird friendly
#food source hard mast fruit
#butterfly friendly
#FACU Piedmont Mountains
#bee friendly
#audubon

Similar Plants

Symphyotrichum laeve Feature Summary

Attributes
Central & Eastern Canada North Central & Eastern U.S.A
AL , AR , CT , DC , DE , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , NE , NH , NJ , NY , OH , OK , PA , RI , SC , TN , VA , VT , WI , WV
Host plant for the Pearl Crescent butterfly. Flowers are attractive to bees and butterflies. Songbirds and small mammals eat the seeds. Members of the genus Symphyotrichum support the following specialized bees: Andrena (Callandrena s.l.) asteris, Andrena (Callandrena s.l.) asteroides, Andrena (Cnemidandrena) hirticincta, Andrena (Cnemidandrena) nubecula, Andrena (Callandrena s.l.) placata, Andrena (Callandrena s.l.) simplex, and Colletes simulans.
Perennial
Wildlife Food Source
Fruit
Produces a dry, one-seeded fruit (achene) tipped with red bristles. It displays from October to November
< 1 inch
Flowers
Many 1/2-1 inch composite violet to blue ray flowers with 15-30 petals and yellow disc flowers in the center. Blooms in early September through late fall.
Purple/Lavender
Blue
7 - 20 petals/rays
more than 20 petals/rays
< 1 inch
Leaves
The leaves alternate and are lance to egg-shaped with a smooth margin. The leaves partly encircle the stem. Upper leaves are smaller and closer together with lower leaves being larger and spaced further apart.
Ovate
Lanceolate
1-3 inches
< 1 inch
Stem
Green stems that turn brown with age. Glabrous and sometimes glaucous.
Brown/Copper
Green
Covered with a powdery bloom (glaucous)
Whole Plant Traits
Perennial
Native Plant
Wildflower
Herb
Erect
Spreading
Medium
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Good Drainage
Moist
Occasionally Dry
Mountains
Piedmont
4a
4b
5b
5a
6a
6b
7a
7b
8b
8a
Clay
Loam (Silt)
Sand
Landscape
Drought Tolerant Garden
Butterfly Garden
Pollinator Garden
Native Garden
Naturalized Area
Butterflies
Pollinators
Songbirds
Bees
Small Mammals
Specialized Bees

Symphyotrichum laeve Attributes

Symphyotrichum laeve: Country Or Region Of Origin

Central & Eastern Canada North Central & Eastern U.S.A

Symphyotrichum laeve: Distribution

AL , AR , CT , DC , DE , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , NE , NH , NJ , NY , OH , OK , PA , RI , SC , TN , VA , VT , WI , WV

Symphyotrichum laeve: Wildlife Value

Host plant for the Pearl Crescent butterfly. Flowers are attractive to bees and butterflies. Songbirds and small mammals eat the seeds. Members of the genus Symphyotrichum support the following specialized bees: Andrena (Callandrena s.l.) asteris, Andrena (Callandrena s.l.) asteroides, Andrena (Cnemidandrena) hirticincta, Andrena (Cnemidandrena) nubecula, Andrena (Callandrena s.l.) placata, Andrena (Callandrena s.l.) simplex, and Colletes simulans.

Symphyotrichum laeve: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Symphyotrichum laeve: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Symphyotrichum laeve: Play Value

Attractive Flowers
Attracts Pollinators
Buffer
Colorful
Defines Paths
Easy to Grow
Edible fruit
Fragrance
Pieces Used in Games
Screening
Shade
Sound
Textural
Wildlife Cover/Habitat
Wildlife Food Source
Wildlife Larval Host
Wildlife Nesting
Wind Break
Wind Shimmer

Symphyotrichum laeve Fruit

Symphyotrichum laeve: Fruit Description

Produces a dry, one-seeded fruit (achene) tipped with red bristles. It displays from October to November

Symphyotrichum laeve: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Symphyotrichum laeve: Display/Harvest Time

Fall
Spring
Summer
Winter

Symphyotrichum laeve: Fruit Length

< 1 inch
1-3 inches
> 3 inches

Symphyotrichum laeve: Fruit Width

< 1 inch
1-3 inches
> 3 inches

Symphyotrichum laeve Flowers

Symphyotrichum laeve: Flower Description

Many 1/2-1 inch composite violet to blue ray flowers with 15-30 petals and yellow disc flowers in the center. Blooms in early September through late fall.

Symphyotrichum laeve: Flower Color

filter_vintage
Blue
filter_vintage
Purple/Lavender

Symphyotrichum laeve: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Symphyotrichum laeve: Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Symphyotrichum laeve: Flower Bloom Time

Winter
Spring
Summer
Fall

Symphyotrichum laeve: Flower Petals

2-3 rays/petals
4-5 petals/rays
6 petals/rays
7 - 20 petals/rays
asymmetrical petals
Bracts
Colored Sepals
fused petals
more than 20 petals/rays
Tepals

Symphyotrichum laeve: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Symphyotrichum laeve: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Symphyotrichum laeve Leaves

Symphyotrichum laeve: Leaf Description

The leaves alternate and are lance to egg-shaped with a smooth margin. The leaves partly encircle the stem. Upper leaves are smaller and closer together with lower leaves being larger and spaced further apart.

Symphyotrichum laeve: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Symphyotrichum laeve: Leaf Color

spa
Green

Symphyotrichum laeve: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Symphyotrichum laeve: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Symphyotrichum laeve: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Symphyotrichum laeve: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Symphyotrichum laeve: Hairs Present

No
Yes

Symphyotrichum laeve: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Symphyotrichum laeve: Leaf Width

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Symphyotrichum laeve Stem

Symphyotrichum laeve: Stem Description

Green stems that turn brown with age. Glabrous and sometimes glaucous.

Symphyotrichum laeve: Stem Color

grass
Brown/Copper
grass
Green

Symphyotrichum laeve: Stem Is Aromatic

No
Yes

Symphyotrichum laeve: Stem Cross Section

Angular
Oval
Round
Square

Symphyotrichum laeve: Stem Surface

Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)

Symphyotrichum laeve Whole Plant Traits

Symphyotrichum laeve: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Symphyotrichum laeve: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Symphyotrichum laeve: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Symphyotrichum laeve: Growth Rate

Slow
Medium
Rapid

Symphyotrichum laeve: Maintenance

Low
Medium
High

Symphyotrichum laeve: Texture

Fine
Medium
Coarse

Symphyotrichum laeve Cultural Conditions

Symphyotrichum laeve: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Symphyotrichum laeve: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Symphyotrichum laeve: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Symphyotrichum laeve: NC Region

Coastal
Mountains
Piedmont

Symphyotrichum laeve: USDA Plant Hardiness Zone

thermostat
4a
thermostat
4b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Symphyotrichum laeve: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Symphyotrichum laeve Landscape

Symphyotrichum laeve: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Symphyotrichum laeve: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Symphyotrichum laeve: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Symphyotrichum laeve: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Symphyotrichum laeve: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees