Plant Calculator
Enter the approximate length and width of the area you will be planting and click 'Calculate' to determine how many Aster oblongifolius 'Twilight Sky' you will need.
Correct and successful spacing is complex and depends on project conditions. We encourage you to call us at 877-ECO-PLUG for project specific recommendations and further assistance.
Aster oblongifolius 'Twilight Sky'
aromatic aster
- Category: Perennial, Native
- Breeder: Mt. Cuba Collection™
- Hardiness Zone: 5-9
- Height: 3-4 ft
- Spread: 18 Inches
- Spacing: 12-18 Inches
- Bloom Color: Blue
If you are looking for style and substance in the autumn landscape, it is hard to beat Symphyotrichum oblongifolium ‘Twilight Sky’. 'Twilight Sky' aromatic aster has long been a favorite of the horticulture staff at Mt. Cuba Center where it has been an integral part of the gardens for decades. Compared to other selections of aromatic aster, 'Twilight Sky' has the edge thanks to its robust mounding habit and its extravagant periwinkle blue floral display. Our newest introduction from the Mt. Cuba Collection.
Exposure
| • | Full Sun |
Plug Type
| • | Landscape Plug™ |
Season of Interest (Flowering)
| • | Fall |
Propagation Type
| • | Vegetative |
Additional Information about Aster oblongifolius 'Twilight Sky'
In addition to its considerable ornamental qualities, Symphyotrichum oblongifolium ‘Twilight Sky’ is a pollinator favorite whose oversized blooms are swarmed by a huge diversity of insects through the month of October. Use as a trouble-free cutback perennial ‘shrub’ – or a back-of-the-border anchor for late-season sparkle
Growing & Maintenance Tips for Aster oblongifolius 'Twilight Sky'
Grow in just about any soil as long as it isn’t too wet. Cutback in the garden in early to mid-June to maintain a moderate height.