Poterium obtusum, commonly known as Japanese Bottlebrush, is a deciduous perennial herb native to the moist meadows and stream banks of Japan and Korea. This plant typically grows to a height of 2-3 feet (0.6-0.9 meters) and a width of 1-2 feet (0.3-0.6 meters). The Japanese Bottlebrush has a bushy growth habit with fine-textured foliage that adds a soft, feathery element to garden compositions. It produces cylindrical, brush-like white flowers that are quite showy, blooming in succession from spring through fall, which can add visual interest to the garden over a long period.

The Japanese Bottlebrush is valued for its extended blooming period and its ability to attract pollinators. It is commonly used in border plantings, cottage gardens, and as a part of pollinator-friendly landscapes. It thrives in full sun but can tolerate part shade, especially in hotter climates. While it prefers consistently moist soil, it is somewhat drought-tolerant once established. Gardeners should ensure good soil drainage to prevent root rot. It is generally low-maintenance but may require regular watering during dry periods.CC BY-SA 4.0