Eupatorium compositifolium aka Yankeeweed

Eupatorium compositifolium is known as Yankeeweed. It is a perennial: it lives for more than two years. It belongs to the daisy family, Asteraceae. It grows wild in the central and southeastern United States. It is not native to Britain or Ireland. The supplied sources give no mature size for this species. They do not describe its leaves, stems, flowers, or fruit.

Yankeeweed suits garden beds in sun or part shade. It grows in sand, loam, and clay soils. Soil should drain well but still hold some moisture. Plants For A Future says it prefers moist soil. Choose a site with both drainage and moisture in mind. The plant accepts soil that is mildly acid or mildly alkaline. It also grows in neutral soil. This gives it a range of possible garden sites. The sources give no hardiness rating or lowest winter temperature.

Each flower has both male and female organs. Insects pollinate the flowers. The species is self-fertile, so it can use its own pollen. The evidence names no insect visitors or months of bloom. Plants For A Future says rabbits seem to leave it alone. This may help where rabbits harm other garden plants. Its account names no pests or diseases. It also records no weed potential for this species.

Grow new plants from seed or split clumps already growing. Sow seed in spring in a cold frame. Add just a thin layer of growing medium over it. Move young plants to separate pots when large enough to handle. Plant them in their final garden spots in summer. Split clumps in spring or autumn. Plants For A Future says this is very easy. The split clumps can go straight into their final spots.

Plants For A Future records no known food uses. It gives the species an edibility score of zero. The source lists no known hazards. That does not mean the plant is safe. It records a traditional use on insect and reptile bites. People applied it to the outside of the body. This record does not show that the treatment works. The plant also has a recorded use to deter insects. People have strewn it indoors as an herb.