What is a common feature of spurges that can pose a hazard during handling?

Spurges are a genus of plants known for producing a milky sap, which is a key identifying feature. This sap contains compounds that can be irritating to the skin and mucous membranes, posing a hazard during handling. When the sap comes into contact with the skin, it can cause dermatitis or other allergic reactions in sensitive individuals. Additionally, if the sap gets into the eyes, it can cause significant irritation and discomfort. Therefore, understanding the hazard associated with the milky sap is essential for safe handling and application of spurges in any setting, particularly in relation to pest control or landscape management.

The other choices do not reflect common dangers associated with spurges. While some plants may produce a fragrance or have thorns, these features do not specifically relate to the handling risks that spurges pose. Growth habits, such as rapid height increase, also do not directly indicate a handling hazard. Thus, recognizing the milky sap as a hazard is crucial for safety when dealing with these plants.