A new Texas law that bans the sale of TC infused vapes took effect on Monday. Although the law does not ban the possession of TC vape pens, retailers who sell them could 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 Are THC Vape Pens Legal in Texas? The Webb Firm, P.C. 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