Cactus Milk in the Eye: First Aid and Plant Identification

What Happens When Euphorbia Latex Gets in Your Eye

A gardener experienced burning and swelling for two days after getting "cactus milk" in the eye while handling a cathedral cactus (often called a milk cactus). Greg clarifies that this plant is not a true cactus but a Euphorbia, native to Africa, whereas cacti originate in the Americas.

The Irritant: Latex Sap

The milky substance is latex, a natural defense that deters herbivores. It is a potent irritant to skin and mucous membranes, especially the eyes. Greg strongly recommends seeing a doctor if exposure occurs, even if symptoms seem to have resolved.

Safety Precautions for Future Handling

• Always wear eye protection (goggles or safety glasses) when pruning or handling Euphorbias.
• Use gloves and long sleeves to prevent skin contact.
• Work in a well-ventilated area and wash hands thoroughly afterward.

If you're unsure whether a plant is a cactus or a Euphorbia, treat it as a Euphorbia to be safe—the latex can cause serious injury.