Transplanting on the other hand can always cause some stress for your plants and if not done carefully, could even kill your plant, say, should you damage the roots when transplanting. It is therefore important, that you move your plants, so that you don’t disrupt their roots in any way.
Most of the time (with some exceptions as mentioned above) you will likely start out your seedlings or clones in small containers and transplant them to bigger pots when the right time has come. The reason here is, that a bigger container allows for a larger root system, that your now rather grown-up cannabis plant will require to get all her nutrients.
Another more advanced solution can be with an automated pump, that can take care of the runoff water, that will collect in your tray.
GROWING CONTAINERS FOR SEEDLINGS
Terracotta planters are heavier than plastic pots, but they can be a good choice. Terracotta has a natural ability to soak up and store excess moisture and can provide a cooling effect, which would benefit your plant’s roots in the hot summer months.
Some types of growing containers like smart pots or air pots will require much bigger saucers, since excess water will flow down the sides when watering. Take this into account.
Not always can it be recommended to start out cannabis plants in a small pot or cup and then transplant them later. Any repotting will always cause some stress to your plants, that you want to avoid.
As a first starting point for selecting the right size pots, you can use pot sizes of approximately 7.5l for each 30cm of plant height. Just know, that not all cannabis varieties grow in the same way. Some strains can grow wide and bushy, while others can grow tall and slender, but this rule can help you get started finding the right sized pot.
For a root system to develop and thrive, they will need the following:
Common pots used for cannabis growing
A relatively new innovation in container gardening, roots in fabric pots grow to the outer edges and attempt to bypass the porous fabric wall. Instead, they are cut back, allowing new growth to occur. This process, called “air pruning,” results in a denser root composition which promotes healthy growth and development.