Aster azureus

Sky Blue Aster / Symphyotrichum oolentangiensis

This hardy native plant lights up the autumn garden with it's brilliant pale blue blooms. Found throughout the tallgrass prairie, Sky Blue Aster is found in a wide variety of locations from wet meadows to dry gravel outcrops. This is good news for the gardener because it will be happy in any sunny location! Attractive to butterflies and other nectar-loving insects.

Homeowner Growing and Maintenance Tips

Plant in average, dry or moist, well-drained soil in full sun. Sky Blue Aster is rather indifferent to soil characteristics, and can flourish in soil that loamy, sandy, rocky, or contains clay. It is easy to grow and very drought tolerant, though it may get powdery mildew on lower leaves after experiencing drought stress.

Height 2-3 Feet

Spread 24-30 Inches

Native Range Aster azureus is found in dry or moist prairies, meadows, open woods, and rocky slopes from New York and Ontario to Saskatchewan and Minnesota south to Georgia, Alabama, Louisiana, and Texas.

USDA Hardiness Zone 3-9

"The caterpillars of the Silvery Checkerspot butterfly (Chlosyne nycteis) feed on this aster and its flowers provide nectar for many species of butterflies."

Characteristics & Attributes

Plan Sub Group • Medium Perennials	Exposure • Sun	Soil • Well-drained • Wide soil tolerance	Soil Moisture Preference • Average • Moist • Dry • Moist but well-drained
Attracts Wildlife • Beneficial insects • Butterflies	Bloom Time • Fall	Habitat Collection • Butterfly	Native Habitat • Grassland
Foliage Color • Green	Uses • Meadow • Wind tolerant • Container • Mass plant • Naturalizes • Border • Cut or dried flower