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Aster oblongifolius 'Twilight Sky' (aromatic aster)

Aster oblongifolius 'Twilight Sky'

aromatic aster

(syn. Symphyotrichum oblongifolium 'Twilight Sky')

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.


Height

3-4 ft

Spread

18 Inches

Spacing

12-18 Inches

Bloom Color

Blue

USDA Hardiness Zone 5-9

aromatic aster Interesting Notes

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

Aster oblongifolius 'Twilight Sky' Growing and Maintenance Tips

Grow in just about any soil as long as it isn’t too wet.

Key Characteristics & Attributes

Full Sun
Full Sun
Moist
Moist
Pollinator-friendly
Pollinator-friendly
Deer Resistant
Deer Resistant
Groundcover
Groundcover
Drought Tolerant
Drought Tolerant

Additional Information

Soil Moisture Needs
Dry
Average
Plug Type
Landscape Plug™
Attributes
Native to North America
Season of Interest (Flowering)
Fall
Propagation Type
Vegetative