Silphium trifoliatum, commonly known as whorled rosinweed,[1] is a species of flowering plant in the family Asteraceae.

It is native to the eastern United States, where it is found east of the Mississippi River.

[1] Its natural habitat is open, grassy areas such as prairies, river cobble bars, and roadsides.

[2] It is a tall perennial that produces heads of yellow flowers in mid-summer through fall.

In contrast, S. asteriscus has scabrous to hispid stems and leaves, which are opposite or alternate.