Autumn bugbane Actaea simplex Photo/Illustration: Courtesy of Monrovia 1 2 3 4 5 6 7 8 9 10 11 Autumn bugbane (Actaea simplex) ak-TAY-ah SIM-pleks Synonyms: Previously known as Cimicifuga simplex Genus: Actaea This clumping woodland perennial with deep green foliage up to 4 feet tall and 2 feet wide bears spikes of fragrant white flowers 1 to 2 feet long in fall. Cultivars exist with varying leaf colors and forms. Care: Likes rich, woodsy soils that stay moist, in partial to full shade. Foliage will suffer if soil is allowed to dry out. Provide shelter from strong winds. Propagation: Divide in spring. Problems: Rust and leaf-feeding insects may be problems. Overview Height 3 ft. to 6 ft. Spread 1 ft. to 3 ft. Growth Habit Clumps Growth Pace Moderate Grower Light Part Shade to Full Shade Moisture Medium Moisture Characteristics Fragrant Flowers, Showy Flowers Bloom Time Fall Flower Color White Uses Beds and Borders, Poisonous Style Woodland Garden Seasonal Interest Summer Interest Type Perennials Actaea simplexView the discussion thread.