Late Boneset (Eupatorium serotinum), also known as Late-Flowering Thoroughwort, is a native perennial found throughout much of the eastern United States. This robust plant is recognized for its clusters of small, white flowers that bloom from late summer to fall, providing a critical nectar source for pollinators during this period. The flowers are borne atop sturdy stems with lance-shaped, serrated leaves, adding a delicate yet striking presence to the garden.
Late Boneset thrives in full sun to partial shade and prefers medium to wet soils. It is commonly found in moist meadows, along stream banks, and in low-lying areas. Its adaptability to various soil types, including clay and sandy soils, makes it a versatile addition to a range of landscape settings.
Ecologically, Late Boneset is highly valuable. Its late-blooming flowers attract a variety of pollinators, including butterflies, bees, and beneficial insects. This plant also supports various moth species and other insects, contributing to a healthy and balanced ecosystem. Additionally, the plant's seeds provide food for birds in the fall and winter months.
In landscaping, Late Boneset is appreciated for its low maintenance and ecological benefits. It can be used in naturalized plantings, wetland gardens, and along pond edges. The plant's tall, airy flower clusters add height and texture to perennial borders and wildflower meadows. By incorporating Late Boneset into your garden, you can enjoy its delicate beauty while providing essential support to local pollinators and enhancing the ecological diversity of your landscape.
 
Photo: Emerson Sapienza