Spotted Spurge: Identification and Control

Spotted spurge (Chamaesyce maculata, sometimes listed as Euphorbia maculata) is an aggressive annual weed that produces vast quantities of seed within just weeks of germination. It grows from a shallow taproot, forming a low mat of branching stems that exude milky sap when cut.

Control Strategies

Mechanical: Hoe or pull young seedlings early in the season, before they bloom and set seed. A vigorous, well-fertilized lawn competes effectively against spotted spurge.

Chemical: If needed, apply a pre-emergence herbicide containing isoxaben, oryzalin, or pendimethalin on lawns and around ornamentals. Spot-treat young plants with herbicidal soap. For spurge in pavement cracks, use a product with glufosinate-ammonium or glyphosate, taking care to avoid desirable plants.

Early action is key—once this weed sets seed, it gains a persistent foothold.