Yellow or brown leaves often indicate improper care. Overwatering is the most common cause of yellow leaves, while underwatering, low humidity, or direct sunlight can cause brown edges or crispy tips. Natural aging may also cause older leaves to yellow and fall off. Check the soil moisture before watering, ensure the pot has proper drainage, and keep the plant in bright, indirect light. Maintaining stable temperatures and humidity can help keep the foliage lush and healthy. know more: https://abodelook.com/knowledge-hub/dieffenbachia/