Symphyotrichum subspicatum, commonly known as Douglas’s aster, is a perennial herb native to moist meadows, marsh edges, streambanks, and wetland margins in western North America. It typically grows to a height of 16 to 47 inches (40 to 120 cm) and is characterized by its clump-forming habit and lance-shaped leaves. Douglas’s aster blooms from late summer to early fall, producing numerous flower heads with violet ray florets surrounding a center of yellow disc florets that become reddish with age. The flowers are highly attractive to pollinators and are considered showy, making them a valuable addition to wildlife gardens.

Douglas’s aster is appreciated for its long blooming period and its ability to attract butterflies and other pollinators. It is often used in native plant gardens, restoration projects, and as a border plant in moist areas. This plant thrives in full sun to part shade and prefers moist, well-drained soils, but can tolerate seasonal flooding. While generally low-maintenance, it can be susceptible to powdery mildew in crowded conditions or when airflow is poor. To maintain vigor and appearance, divide clumps every few years to prevent overcrowding.CC BY-SA 4.0