Anemonastrum deltoideum, commonly known as Columbian windflower or western white anemone, is a rhizomatous perennial herb native to moist, forested environments such as coastal woodlands and montane forests in the Pacific Northwest of the United States. It typically grows between 4 and 12 inches tall and features a single basal leaf divided into three large toothed leaflets. The plant produces an inflorescence consisting of three bracts and a single flower with five petal-like white sepals that bloom in spring. The flowers are modest in size but can add a delicate beauty to woodland gardens.

Columbian windflower is valued for its early-season blooms and its ability to naturalize in shady garden areas. It is often used in woodland gardens, shade gardens, and native plant gardens. This species prefers cool, moist conditions and well-drained soil rich in organic matter. It requires part shade to full shade and consistent moisture to thrive. While generally low-maintenance, it can be susceptible to snail and slug damage. Gardeners should be aware that this plant can spread via rhizomes and may need to be managed to prevent unwanted spread.CC BY-SA 4.0