Planting any type of plant there are dos and don’ts, and this is also true when planting marijuana plants. The roots of these plants need oxygen and this is why the soil needs to be prepared with a mixture of sand and either pearlite or sponge rock. The containers also need to be sterilized and the correct size to allow the roots to get the oxygen and nutrients the plants need. As a rule of thumb when planting in the pots the cannabis will mature in the larger the pot the more growing room the plant has, meaning it will be able to grow larger in a larger pot.
The pot that the marijuana plants are placed in must have holes in the bottom for drainage, otherwise the roots can become too wet and then bacteria can form that can either slow the growth of the plant or kill it.
One of the hints that experienced growers and gardeners know is that these are not the type of plants that should be planted in red clay pots. This is because the terra cotta is known for soaking up the water and rapidly drying out the soil.