At what stage are annual weeds most vulnerable?

Annual weeds are most vulnerable during the seedling stage. At this point in their life cycle, these weeds are newly germinated and have not yet developed strong root systems or the ability to compete effectively with established plants. This stage is critical as the seedlings are small, with limited leaf surface area to photosynthesize and gather nutrients and water.

Controlling annual weeds at this early stage often requires less herbicide application and is usually more effective, since small seedlings are more susceptible to both mechanical and chemical control methods. As weeds progress to older stages, they become more resilient and able to withstand management practices, making early intervention essential for effective control.