Boneset (Eupatorium perfoliatum) is a must have for moist sites. It has a long bloom period, with intensely aromatic flowers that are of high value to pollinators. It is the host plant to a number of butterflies and moths including Lined Ruby Tiger Moth, Burdock Borer Moth, Three-lined Flower Moth, Blackberry Looper, Geometrid Moth and Clymene Moth. Boneset is deer resistant and will also tolerate shaded conditions. Pairs well with cardinal flower and New England aster. Plant seed densely as this species has a naturally low germination rate.
Cold, moist stratification required. Mix seeds with moist substrate (vermiculite, perlite or moss) and place in a plastic bag and refrigerate for 6-8 weeks. Sow seed at 1/8 inch depth. Do not let seedling dry out while it is establishing.
Sow directly outdoors in late fall to overwinter.