Root aphids are the stuff of horror movies.

They're born pregnant, and some of them can mutate into flyers. When you hit them with pesticides, they send a lot of flyers out.

They just don't go away. You'll think you're clean, then they'll come back stronger out of nowhere. They're "borderline supernatural," according to Bill Cook, a cannabis consultant and today's guest.

In this episode, Bill talks about how to control root aphids, which is one of the most significant topics facing cultivators of THC or CBD cannabis.