The answer to 'weed control yellowing' is that yellow weeds are often a sign of an underlying issue that needs to be addressed. Common causes include nutrient deficiencies, drought stress, or disease. Symptoms may include leaves turning yellow or pale green, and the weed may eventually die off.
To address weed control and yellowing, start by identifying the underlying cause. This may involve testing your soil, adjusting watering and fertilization, or treating for pests or disease. For severe or persistent issues, it's best to consult a professional landscaper who can properly diagnose and treat the problem.