It is designated a noxious weed, meaning land owners or managers are legally responsible for its control. If unchecked, this weed quickly displaces native vegetation. Leafy spurge reduces wildlife, livestock production, and, to some degree, recreation. The pale green or blue green stems of leafy spurge are hairless.
Leaves are also hairless and alternate on the stem.
If the stem is injured, a milky latex sap will flow from the injury. If ingested, this milky latex is a digestive tract irritant to cattle and, if contacted, can cause lesions around the eyes and mouth. Figure 1 is a close-up photograph of leafy spurge bracts. Click on the photos below to view a larger version. Photos courtesy of MSU Extension Service.