Approval of cannabis vapes comes in midst of health scare over outbreak of vaping related illnesses and deaths Ottawa Citizen Texas THC Vape Ban Just Took Effect As of Sept 1, it's now illegal for retailers in Texas to sell or promote THC vapes. Here's what you need to know Spotted this in a Grapevine gas station Starting Sept. 1, it will be illegal to sell THC or hemp derived cannabinoid vapes (and a few other types of vapes) in Texas. This will Vaping: Get the Facts. Protect Your Future Anne Arundel County Health Department