Euphorbia dentata, commonly known as toothed spurge or green poinsettia, is an annual herb native to temperate and tropical regions of North and South America, particularly in prairies, disturbed sites, and along roadsides. It typically grows to a height of 1 to 3 feet (0.3 to 0.9 meters) and has a similar width. The plant has a bushy appearance with toothed leaves that give it its common name. It produces small, inconspicuous greenish-yellow flowers in the summer, which are not particularly showy, but the foliage can add a textural element to gardens.

Toothed spurge is often considered a weed in agricultural settings due to its rapid growth and ability to compete with crops. However, it can be used in wildflower gardens or as a filler plant in borders due to its interesting foliage. It is drought-tolerant and thrives in a variety of soil types, though it prefers well-drained soils. It can grow in full sun to part shade. While not commonly cultivated, it can be a low-maintenance option for areas where other plants struggle. Care should be taken when handling Euphorbia dentata, as the sap can be irritating to the skin and eyes.CC BY-SA 4.0