Silphium terebinthinaceum aka Prairie Dock

Silphium terebinthinaceum, commonly known as prairie dock or prairie rosinweed, is a tall herbaceous perennial belonging to the Asteraceae family, which also includes sunflowers. Native to central and eastern North America, this plant is characterized by its large, oblong to heart-shaped leaves that form a basal rosette. It can grow up to 4m in height and blooms with masses of yellow, daisy-like flowers from mid-summer to mid-autumn. One of the reasons it acquired the name "rosinweed" is because when injured, resin flows from the plant, emitting a sweet fragrance. In Native American culture, the roots of prairie dock are used to brew medicinal tea with various applications. Additionally, the smoke from this plant has been employed as a treatment for congestion and rheumatism. Prairie dock is a native wildflower that thrives in dry to moist loamy well-drained soils. Its vibrant yellow sunflower-like flowers, which bloom from July to September, are pollinated by native bees. These bees also utilize the plant for nesting materials, sometimes even nesting beneath it. Silphium terebinthinaceum is a remarkable and versatile plant that contributes to the ecological health of its surroundings while offering medicinal and aromatic benefits.