In fall, Aster oblongifolium 'Twilight Sky' (aromatic aster) lights up your garden with a dense canopy of violet-blue, daisy-like flowers that keep coming when many perennials are fading. The blue-green foliage is sticky and pleasantly aromatic when rubbed, adding an extra sensory note along paths and borders.

Plant it in full sun for the strongest bloom, though it can still perform in part shade. Give it well-drained soil; once established it handles dry spells well, yet also adapts to average moisture as long as drainage is good. Mature plants typically form a sturdy, mounding clump about 36-48 inches tall, with a broad footprint for filling space in a late-season planting.

To keep growth tidy and encourage a fuller shape, you can cut it back in early summer. After flowering, leave some stems standing through winter when you can; hollow stems provide valuable nesting habitat for beneficial native bees. Use it as an easy-care anchor in sunny borders, native plantings, and pollinator gardens where butterflies and other late-season visitors are welcome.

Specifications

• Cold hardiness zone: 3-8 (-40 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun   Part sun
• Growth rate: Moderate
• Mature height: 36-48"
• Spread: 48-72"
• Tolerant of: Deer, Drought, Rabbits
• Attracts: Butterflies
• Good for borders & edging: Yes
• Fragrant: Yes
• Native to the U.S.: Yes

Shipping

FREE SHIPPING - Classy Groundcovers offers free shipping, and your plants never spend more than three days in transit.

Precise delivery - another benefit from shopping with us is that you know hpw to control exactly when your order will be shipped.

Shipping information that applies to all plants:
- When We Ship
- You May Specify Your Shipping Date
- Lookup Shipping Date and Tracking Information
- Special Delivery Instructions
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Care