The frequency of watering your cannabis plants depends on several factors such as the stage of growth, the size of the plant, the type of soil or growing medium, the environmental conditions, and the size of the container. As a general rule, you should water your cannabis plants when the top 1-2 inches of soil or growing medium feels dry to the touch. Overwatering can cause root rot and other problems, while underwatering can cause stress and reduce growth and yields.
During the vegetative stage, cannabis plants typically require more frequent watering, as they are growing rapidly and developing new leaves and branches. During the flowering stage, plants require less frequent watering as they focus their energy on producing buds.
As your plants grow larger, they will also require more water to meet their needs. When watering, make sure to saturate the entire root zone and allow excess water to drain away, as stagnant water can also cause problems.
In summary, it is important to monitor your plants regularly and adjust your watering schedule accordingly. As a general guideline, water your cannabis plants when the top layer of soil or growing medium is dry and adjust the frequency based on the stage of growth and environmental conditions.