Aster cordifolius 'Avondale'
Aster cordifolius 'Avondale' is a refined selection of blue wood aster valued for its deep violet blue flowers that appear in fall when most perennials begin to fade. Its airy branching habit creates a soft cloud of color that brightens shaded edges and naturalized plantings while extending seasonal interest late into the year.
Height & Spread: 18 - 24 in x 18 - 24 in
Bloom Time: Fall
Light Requirements: Part shade to shade
Soil Preference: Average well drained soil
Watering Needs: Moderate; prefers consistent moisture
Deer Resistance: Deer resistant
Native Status
This cultivar is derived from Aster cordifolius, a species native to eastern North America. It maintains the ecological value of the species while offering improved flower color and garden performance.
WILDLIFE & INSECTS
Butterflies
- Provides an important late season nectar source for Monarchs, Painted Ladies, and other migrating butterflies.
Bees
- Supports native bees and bumblebees which rely on its fall blooms when other nectar sources are limited.
Spacing & Landscape Use
Spacing Recommendations
- Space 18 - 24 in apart to allow its airy branching habit to fill in naturally.
Landscape Placement
- Ideal for woodland edges, shade gardens, and naturalized plantings where it adds soft texture and valuable late season color.
Companion Plants
- Calamagrostis acutiflora 'Karl Foerster' (Feather Reed Grass) - Provides upright structure that contrasts with the airy branching habit.
- Symphyotrichum novae angliae (New England Aster) - Adds bolder form and color variation for a layered fall display.
- Solidago rugosa 'Fireworks' (Goldenrod) - Pairs with complementary late season blooms and supports pollinators at the same time.
- Carex pensylvanica (Pennsylvania Sedge) - Creates a soft ground layer that works well in part shade conditions.
- Heuchera americana (Coral Bells) - Offers attractive foliage that grounds the planting beneath the airy flowers.