Eupatorium japonicum, commonly known as fragrant eupatorium, is an herbaceous perennial plant native to open woodlands and grassy areas in China, Taiwan, Japan, and Korea. It typically grows to a height of 20-79 inches (50-200 cm) with upright stems that culminate in simple or corymbose inflorescences. The florets can be white, red-purple, or pink, and the plant is in bloom from June to November, offering a long-lasting floral display. The flowers are modest in size but can be quite showy when planted en masse. In its native habitat, Eupatorium japonicum thrives in moist, well-drained soils, often in areas with dappled sunlight or partial shade.

Fragrant eupatorium is valued for its extended blooming period and its ability to attract pollinators such as butterflies. It is used in border plantings, wildflower gardens, and as part of naturalistic landscaping. This plant prefers consistently moist soil and can tolerate a range of light conditions from full sun to part shade. It is relatively low-maintenance but should be monitored for potential spread, as it can self-seed and become invasive in some regions. Gardeners should be aware that Eupatorium japonicum contains tumorigenic pyrrolizidine alkaloids, which can be toxic if ingested in large quantities.CC BY-SA 4.0