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Cornflower Aster

Stokesia laevis (STOK-see-ah LAY-viss)

Family: Asteraceae Native Herbaceous (1-3 ft)

Stoke’s aster is an herbaceous perennial in the daisy family (Asteraceae) native to the southeastern United States. The genus name commemorates Jonathan Stokes (1755–1831), an English physician and botanist. The species epithet is Latin for "smooth" and likely refers to the margins of the rosette leaves (cauline leaves usually have toothed margins). Stoke’s aster grows in full sun to partial shade and prefers moist soil with good drainage. It will tolerate occasionally wet soil and is resistant to drought, deer, and rabbits. It will grow 1 to 2 feet tall and up to 18 inches wide. This plant was very popular in old gardens. The showy deep violet or lavender-blue flowers appear in early summer. Its leaves persist through the winter, in dark green, attractive rosettes. Plant this aster as a border or mass planting in a native, pollinator, butterfly, cottage, or winter garden. Its tolerance of moisture also makes it appropriate for a pond margins or upper riparian areas. Insects, Diseases, and Other Plant Problems: No significant problems.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 50 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (1-3 ft) Optimal soil pH Acid (<6.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Full plant profile

Growing Conditions
Plant type
Herbaceous Perennial; Native Plant; Perennial; Wildflower
Life cycle
Perennial
USDA zones
5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil pH
Acid (<6.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist | Occasionally Wet
Available space
3 feet-6 feet
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 1 ft. 0 in. - 2 ft. 0 in. | Width: 1 ft. 0 in. - 1 ft. 6 in.
Maintenance
Low
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Foliage
Deciduous
Leaf color
Green
Leaf type
Simple
Leaf arrangement
Alternate; Rosulate
Leaf shape
Lanceolate
Leaf margin
Entire
Leaf size
3-6 inches long, < 1 inch wide
Hairs present
No
Leaf detail
Basal rosette of lanceolate 6" long leaves. Stem leaves have no petiole and are smaller than basal leaves.
Flower color
Blue; Purple/Lavender; White
Flower value
Fragrant; Showy
Flower form
Head
Flower shape
Tubular
Flower size
1-3 inches
Flower detail
Deep violet or lavender-blue flowers appear in early to mid-summer, May to June. Remove spent flowers to prolong the bloom season.
Bloom time
Summer
Wildlife & Ecology
Native status
Native
Origin
Southeastern United States
Wildlife value
Butterflies and bumblebees are attracted by nectar at the blooms in the summer.
Attracts
Bees; Butterflies; Pollinators
Play value
Attractive Flowers; Attracts Pollinators; Wildlife Food Source
Food & Medicine
Harvest time
Summer
Landscape Use
Landscape location
Pond; Riparian
Landscape theme
Butterfly Garden; Cottage Garden; Drought Tolerant Garden; Native Garden; Pollinator Garden; Winter Garden
Design feature
Border; Mass Planting; Small groups
Garden tags
#ncemgva2018 #lavender #winter interest #deer resistant #nectar plant #pollinator plant #native garden #NC native #native wildflower #silver #silver flowers #yellow flowers #purple #white flowers #summer flowers #blue flowers #purple flowers #pink flowers #rabbit resistant #drought tolerant #butterfly friendly #HS302 #nectar plant late summer #nectar plant mid-summer #full sun tolerant #partial shade tolerant #bee friendly #wet soils tolerant #riparian #low maintenance #pond margins #perennial #wildlife friendly #herb garden #HS303
Problems & Resistance
Resistant to
Deer; Drought; Rabbits; Wet Soil
Particularly resistant to
Moderate deer resistance; rabbit resistant and drought tolerant
Propagation
Division; Seed; Stem Cutting

Planted at Hunnicutt

Nobody’s planted this one yet.