Make no mistake about it – the quality of the seeds you buy will make an enormous difference to your overall success rates when growing cannabis indoors. As such, it is of the utmost importance that you only ever buy cannabis seeds from a leading supplier with a flawless reputation. This is of course something that you will need to take into account alongside the first entry, given the fact that the cannabis seeds you choose will determine exactly how much space you need in which to grow the plants. Be sure to check out as many different cannabis strains as necessary before going ahead, or take your questions to a professional retailer for more advice.