Open-pollinated. Perennial to Zone 3. This native wildflower is easy to distinguish when not in flower by the stem that appears to grow through fused leaves, hence another common name, Thoroughwort. Tiny white flowers in fuzzy clusters top the 4' plants in late summer. The name comes from its historical use to soothe “bonebreak fever” a disease now known as dengue, known to cause extreme fever and aching pain that travels deep into the bones. More recent German research indicates it may act as an immune stimulant. The bitter tea of aerial parts in bud or bloom can be used in moderation as a tonic or for colds, coughs and flus; in excess it is emetic and laxative. In addition it is an especially important food source for native bees. Prefers sun and moist rich soil. 7,000 seeds/g. Especially attractive to pollinators. ①
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