At its core, "how often" is an interrogative phrase used to inquire about the frequency or regularity of an action or event. It allows speakers to specify a number of actions or events within a specific time frame, providing valuable insights into habits, routines, and patterns.

Begin applying fertilizer after your third mowing or once the lawn is established, about 30 days. Fertilize your lawn every six to eight weeks from late February through early November. Your November fertilizing will be your winter feeding that will help your lawn get through the cold months without a lot of growth.