Aster oolentangiensis (azureus)

Sky Blue Aster

This shorter aster is usually less than three feet tall and is an excellent late bloomer for the mixed border. Loads of blue flowers with yellow centers bloom in fall. The foliage is blue-green and stems are dark. Butterflies love the nectar.

Height 24-36 Inches

Spread 18-24 Inches

Bloom/Seasonal Color Blue

USDA Hardiness Zone 3-6

Good Companions Little Bluestem (Schizachyrium scoparium), Stiff Goldenrod (Solidago rigida), Sideoats Grama (Bouteloua curtipendula), Fragrant Sumac (Rhus aromatica), Willow-leaved Sunflower (Helianthus salicifolius), Prairie Dropseed (Sporobolus heterolepis)

Characteristics & Attributes

Hydrologic Designation • UPL	Nature Attracting • Songbird	Root • Fibrous
Season of Interest • Late (July-frost)	Soil Moisture • Average • Moderate	Special Uses • Fresh Cut Flower
Sun Exposure • Medium Sun/Average Shade • Full Sun	USFS MO Ecological Map • Central Dissected Till Plain • Ozark Highlands • Osage Plains	Wildlife Benefit • Food/Birds • Butterfly Nectar