The answer to 'grass yellowing' is that there are several common causes, including nutrient deficiencies, excessive thatch, drought stress, and fungal diseases. Symptoms include patchy or uniform yellowing of the grass blades, and the grass may feel spongy or have a dull appearance.
In many cases, you can address the issue through DIY methods like fertilizing, aeration, or adjusting your watering schedule. However, if the problem persists or you suspect a disease, it's best to consult a professional landscaper who can properly diagnose and treat the issue.