What is a COA for CBD and How Do I Read It? (Applies to all cannabis!) December 31, 2020 /r/Marijuana is an educational and informative subreddit for Marijuana. While this is not a subreddit dedicated to CBD or hemp, we encourage thoughtful discussion on all cannabinoids as long as they are derived from Marijuana. We are dedicated to policy reform, related news, advocacy, opinion, health, and discussion about the plant itself.