Is Delta 9 THC Legal in Texas? Delta 9 THC is the psychoactive substance found in cannabis plants, which gives users a high. But Delta 9 THC is also one of the most harmful cannabinoids. Federal Government has placed delta-9 THC in Schedule 1 of its list of dangerous drugs. https://delta-9-thc35109.ja-blog.com/18481435/this-is-the-complete-listing-of-delta-9-legal-dos-and-don-ts