Eupatorium perfoliatum (Boneset) 9 cm Pot

Growth habit & appearance: Eupatorium perfoliatum, known as Boneset, is a statuesque wetland perennial recognised by its striking perfoliate leaves—each pair fused around the stem so it appears to grow straight through the foliage. The plant forms upright clumps with coarse, textured leaves and bears flattened clusters of downy white flowers in late summer. Its structural form and pale blooms provide a luminous contrast in wetter areas of the garden, drawing in bees, hoverflies and butterflies.

Growing conditions: Hardy in Ireland and well suited to our island’s naturally damp soils, Boneset thrives beside ponds, streams, ditches or in low-lying ground that remains consistently moist. It tolerates full sun to partial shade but produces its best growth in open positions with fertile, humus-rich soil. Although native to North America, it adapts reliably to Irish climates where moisture availability is stable.

Traditional & herbal uses: Historically associated with colds, flu-like symptoms, sinus congestion and feverish conditions, with above-ground parts harvested during flowering.

Maintenance & harvesting: Cut back spent stems in late winter as new shoots emerge from the crown. Maintain consistent soil moisture during dry periods to avoid wilting. Plants benefit from an annual mulch of compost or leaf mould to retain dampness and support robust growth. Harvest aerial parts while the plant is in full flower, ideally on a dry morning. Boneset may self-seed modestly in moist soils; remove seedlings if you wish to limit spread.