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.
Height3-4 ft |
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Spread18 Inches |
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Spacing12-18 Inches |
Bloom ColorBlue |
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USDA Hardiness Zone 5-9 |
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
Grow in just about any soil as long as it isn’t too wet.
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