Count on Aster oblongifolium 'October Skies' for late-season color and pollinator value with minimal fuss. Also known as Aromatic Aster 'October Skies', it forms a dense, mounding plant that becomes blanketed in clear sky-blue, daisy-like flowers in fall, right when many perennials are winding down. Crush a leaf and you will notice the pleasantly aromatic foliage that gives this group its common name.
In the garden, place it where it will get full sun for the most flowers, but it also performs well with some afternoon shade. Mature size is typically 12-18 inches tall, with a tidy, rounded habit that fits easily into mixed beds, prairie-style plantings, and naturalistic borders. It is well suited to well-drained soils and is especially useful in dry to average sites once established.
For best results, water regularly during the first growing season to help roots develop, then reduce watering as the plant settles in. Provide good air circulation and avoid over-fertilizing to keep growth sturdy. After flowering, you can leave stems standing for seasonal interest and wildlife value, then cut back in late winter or early spring before new growth begins.