Thyme plant turning brown

A thyme plant may turn brown due to several factors, including overwatering, underwatering, poor drainage, or insufficient sunlight. Browning can also result from pest infestations or diseases. Ensure the plant is in well-draining soil, receives adequate light, and is watered appropriately—allowing the soil to dry out between waterings. If pests or diseases are present, treat them promptly to restore the plant's health.