What is a defining feature of prostrate spurge?

A defining feature of prostrate spurge is the presence of a white milky substance that exudes when the stems or leaves are cut. This characteristic is a notable identifying trait of many plants within the Euphorbia genus, which includes prostrate spurge. The milky sap can be a protective mechanism for the plant, deterring herbivores due to its potential toxicity.

The other characteristics listed do not define prostrate spurge. For instance, large white flowers are not a feature of this plant; in fact, prostrate spurge typically has small flowers that are not particularly showy. Additionally, while prostrate spurge does have leaves that can be considered somewhat fleshy, they are not notably thick compared to other succulent plants. Lastly, blue or purple trumpet-shaped flowers are characteristic of other species and not of prostrate spurge, which lacks such flower morphology. Understanding these specific traits helps in accurately identifying and managing the presence of prostrate spurge in turfgrass settings.