The main risk is people telling their friends, or people they know about their grow. Once you tell one person, that person tells someone they know that you may not know, and it goes on and on until someone either rats you off, blackmails you, or just rips you off altogether. If you choose to grow, keep it to yourself.

It's usually the big growers who get busted. Mainly because they are running so much electricity that it attracts attention to the power companies. Plus, growing larger amounts is harder to conceal. Especially if you have friends over and are wondering about the stink in your basement, and why it is locked and sealed up down there.

So the main risk is someone not being able to keep their mouths closed about it. Other than that, it is easy to conceal and hide 2-6 plants in a small space and keep it secret. Less plants means less power is to be run, which means less attraction from your electric company.