Spurge is a common lawn weed that pops up usually around June and July. It can be hand pulled but some people are allergic to the sticky white sap. It usually appears in thinner areas on the edges of lawns or in bare spots throughout the lawn.
It can be killed with many three way and four way herbicides. Sometimes spurge will have a reaction when sprayed, and will go to seed quickly after. It’s common to need repeat applications however using a weed killer with triclopyr is usually more effective.
Preventing Spurge is a bit tricky, not all pre-emergents are very effective against it. A combination of a thick, healthy lawn and pre-emergent is key.