When should you spray to kill leafy spurge?

To effectively control leafy spurge, you should spray herbicides during the late spring to early summer, specifically when the plants are actively growing and before they flower. This timing typically falls between mid-May and early June, allowing the herbicide to be absorbed effectively. Additionally, a follow-up treatment in the fall can help manage any regrowth. Always check local recommendations and guidelines for specific herbicide choices and application rates.