Can be cultivated both indoors and outdoors Marijuana can be can be cultivated both indoors and outdoors. It is up to you where you want to grow your plants. Some growers prefer the outdoors because outdoor spaces are often bigger and they have reliable sources of air, light, and water. Others want to grow their marijuana indoors because of several advantages. Indoor gardens provide better protection against pest infestations, drastic weather changes, and so on. If you plan to grow your ...