The answer to 'why is my sod' is that there can be several common causes for issues with sod, including improper installation, inadequate watering, or pest/disease problems. Symptoms may include brown or patchy areas, wilting, or poor growth. Solutions can range from adjusting watering schedules, aerating the soil, or treating for pests or disease, to potentially needing to re-sod the area.
In many cases, minor sod issues can be addressed through DIY troubleshooting and maintenance. However, for more serious or persistent problems, it's often best to consult a professional landscaper who can properly diagnose the issue and recommend the appropriate solution.