Why are popcorn cassia plant leaves turning yellow?

Popcorn cassia plant leaves may turn yellow due to several factors, including nutrient deficiencies, particularly nitrogen, or overwatering, which can lead to root rot. Environmental stress, such as extreme temperatures or insufficient light, can also cause yellowing. Pests or diseases affecting the plant can contribute to leaf discoloration as well. Regular monitoring and proper care can help identify and address the underlying issues.