There are 4 different types of potential grow room uses when growing a flowering plant such as medical marijuana. The first would be a small rectangular grow room, used for cloning machines. This can be used to contain your cloning activities separate from the rest of your plants (however you can always put your cloner with your other vegging plants if you prefer). You would just want to make sure you have enough room to hang lights over your cloner and of course have some type of minimal ventilation.

The next type of the most commonly used grow tents would be your mother tent. This can be a variety of sizes depending on how big your mother plant is and how many clones you need to take. You would just again want to make sure that it is big enough to allow some growth and still have room to hang your lights. This is another case where you can just have the mom with your vegging plants.

You then have your vegetation grow tent. This tent would be used to grow your newly rooted clones up into full bud yielding plants. A good rule of thumb is to use about 25% of the space that you will be flowering in. You may want to use a bit more if you opt out of using the tents above and just housing your mother plant and clones all in the same grow room.

The final and most important room is your flowering room. While your plants are flowering it is very important to maintain optimal conditions in order to maximize yield and quality. This room should offer enough room to have osculating fans, your lighting system, and preferably plenty of room to ensure all major plant leaves are exposed to direct light.

Or, you can always just use one big tent and do everything in one cycle rather than keeping a continuous grow.