Silphium integrifolium 'Rosin Weed'

Silphium integrifolium, commonly known as Rosinweed is a native perennial species of plant that is commonly found in the prairies and savannas of North America. It is characterized by its tall, upright growth habit and its large, yellow composite flowers that resemble daisies. Flowers bloom from July through September. The leaves of Silphium integrifolium are large and basal, with a rough leathery texture and a bright green color. They are also opposite and arranged in pairs along the stem.

In terms of habitat, Silphium integrifolium is adapted to a variety of soil and moisture conditions and can be found in both dry and moist soils. It is also tolerant of drought and can grow in full sun to partial shade. The species is an important food source for wildlife, including pollinators, and is also used for landscaping and restoration projects due to its attractive appearance and low maintenance requirements. The large, basal leaves and tall stature of Silphium integrifolium also make it an important component of prairie and savanna ecosystems, providing food and habitat for a variety of species.

Photo attributions:

Photo 1: John Foxe, CC0, via Wikimedia Commons