Aglaonema plants can drop leaves for various reasons, including environmental stress, overwatering, and pests. Here's a detailed guide on why your Aglaonema may be dropping leaves and how to solve it:

1. Environmental stress Aglaonema plants can drop leaves if they're exposed to extreme temperatures, drafts, or direct sunlight. Move the plant to a location with more suitable conditions, such as a shaded area away from drafty windows or vents.

2. Overwatering Overwatering can cause the roots to become waterlogged, leading to root rot and leaf drop. Allow the top inch of soil to dry out before watering and ensure that the pot has adequate drainage.

3. Underwatering Underwatering can cause the leaves to wilt and drop off. Water the plant when the top inch of soil is dry and ensure that the soil is evenly moist but not waterlogged.

4. Pests Pests such as spider mites, mealybugs, and scale insects can cause leaf drop. Inspect the plant for signs of pests, such as webbing, sticky residue, or small insects, and treat the plant with an appropriate insecticide.

5. Nutrient deficiency A lack of nutrients such as nitrogen or potassium can cause the leaves to yellow and drop off. Fertilize the plant with a balanced fertilizer or a fertilizer that's specific to the nutrient deficiency.

6. Transplant shock Aglaonema plants can experience transplant shock if they're moved to a new pot or location. Give the plant time to adjust to its new environment and ensure that it's receiving adequate water and light.

In summary, Aglaonema plants can drop leaves due to environmental stress, overwatering, underwatering, pests, nutrient deficiency, or transplant shock. By identifying the cause of leaf drop and taking appropriate action, you can ensure that your Aglaonema plant stays healthy and vibrant.