Plant in well-draining, rich soil and ensure it receives partial to full shade for optimal growth. Keep the soil consistently moist but not waterlogged, watering regularly during dry spells. Apply a balanced, slow-release fertilizer in early spring to support robust growth. Prune back dead or damaged stems in late fall or early spring to maintain a tidy appearance. Divide clumps every few years in spring to prevent overcrowding and promote vigorous growth.