Overwatering cannabis plants
What it looks like
Leaves droop and feel heavy, and the pot stays wet days after a watering. Roots need air. A constantly wet medium starves them even when the plant looks thirsty.
What usually causes it
Let the pot dry back until it is light. More water makes it worse. A fabric pot and airflow under the canopy help the next cycle.
Check this first
Droopy, heavy, dark leaves, pot still wet days later. Lift the pot. If it is heavy, wait. Do not water a wilt that is already wet.
This is identification for a home grow. It is not a pesticide label and not medical advice. Follow your local law.