Twilight Sky Aromatic Aster (Aster oblongifolius 'Twilight Sky')

Twilight Sky Aromatic Aster (Aster oblongifolius 'Twilight Sky') is a perennial with stiff, hairy, green, lance-shaped foliage. Abundant clusters of small light violet flowers with yellow centers bloom from mid- to late fall.

The species is native to eastern and central North America, including the Southeast. Allow room for this selection's broad mature spread when adding late-season color to sunny plantings.

Growing details

• Plant type: Perennial
• Species origin: Eastern and central North America, including the Southeast
• Mature height: 3–4 feet
• Mature spread: 4–6 feet
• Spacing: Approximately 5 feet apart
• Hardiness: USDA zones 3–8
• Light: Full sun
• Soil: Dry to medium-moisture, well-drained soil
• Flowers: Light violet blooms with yellow centers
• Bloom season: Mid- to late fall
• Foliage: Stiff, hairy, green, lance-shaped leaves

Care and garden use

Provide good drainage and watch for powdery mildew. Cut back flower stalks after flowering to prevent self-seeding where it is unwanted.

Use as an accent or in grouped plantings, sunny borders, wildlife gardens, or naturalized areas. Containers should provide enough room for its mature size. Pair with salvia, dianthus, or phlox for contrasting flowers and textures.

Image credit: Prides Corner, Aster oblongifolium 'Twilight Sky'. Plants naturally vary in appearance and may differ from the images shown.