Astilbe thunbergii, commonly known as Ostrich Plume, is a deciduous perennial herb native to moist, mountainous woodlands and ravines in Japan. It typically grows to a height and width of about 3 feet (0.9 meters), forming dense, fern-like foliage with an airy and graceful appearance. The plant produces arching plumes of tiny, densely packed flowers that can range from white to various shades of pink and red, blooming in mid to late summer. The flowers are highly ornamental and add a soft, feathery texture to garden settings.

Ostrich Plume is valued for its showy flower spikes and its ability to thrive in shady garden spots where other plants may struggle. It is often used in border plantings, woodland gardens, and as a ground cover under taller shrubs or trees. Astilbe thunbergii prefers consistently moist soils and does not tolerate drought well, so it’s important to provide regular watering, especially in dry conditions. It thrives in part shade to full shade and benefits from soil rich in organic matter with good drainage. While it is generally pest and disease resistant, powdery mildew and leaf spot can occasionally be problems. It is also important to note that Astilbe can be sensitive to high heat and humidity. The cultivar ’Ostrich Plume’ has gained the Royal Horticultural Society’s Award of Garden Merit for its garden performance and beauty.CC BY-SA 4.0