Azure Aster
Herbaceous perennial growing 60-90 cm tall. Features narrow leaves and azure blue flowers blooming September-October. Prefers well-drained soils and full sun to partial shade. Drought-tolerant once established. Attracts late-season pollinators. Excellent for prairies, meadows, and sunny borders. Provides important late-season nectar source. Also known as Sky Blue Aster. Native to central and eastern North America.
Plant Details
Bloom Colour: Pale Blue to Lavender
Bloom Time: Late-Summer to Fall
Sun Requirements: Sun to Part-Sun
Moisture: Dry to Moist-Drained
Phenology: Growth emerges May. Leaves fully developed by July. Sky-blue flowers appear September-October. Seeds mature late October.
Wildlife Value: Important late season pollinator plant; seeds eaten by songbirds; provides cover for beneficial insects
Habit Over Time: Develops well-behaved clumps that spread slowly through short rhizomes. Unlike more aggressive asters, it maintains clear boundaries and integrates well with neighboring plants. The upright stems provide good structure while allowing views through to background plants.
Height: Medium (1-3 feet)