A compact, late-blooming shrub with deep blue flowers that attract bees, butterflies, and other pollinators. ‘Dark Knight’ adds rich color to sunny borders and gardens when many other plants are beginning to wind down for the season.

• Sun: Full sun
• Water: Low to moderate; drought tolerant once established
• Bloom Time: Late summer through early fall
• Size: 2–3' tall × 2–3' wide
• Zones: 5–9
• Foliage: Deciduous
• Flower Color: Deep blue
• Pollinators: Attracts bees and butterflies
• Growth Habit: Compact, mounded shrub