Silphium simpsonii var. wrightii (Simpson Rosinweed)
Also known as Slender Rosinweed.
Simpson rosinweed is a big perennial with cheery yellow flowers that bloom from midsummer to early fall. It is best planted in groups and works well as a background accent, in prairies, native plants gardens, naturalized areas, and open woodland gardens.
AT A GLANCE
|Water use||Low, medium|
|Sun exposure||Full to part sun|
|Bloom time||Summer, fall|
|Mature height||2-6 ft
|Notes||Native bee friendly. Spreads by rhizomes.|