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 New Texas THC regulations restrict smokable hemp sales, impacting consumers and retailers 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 Texas' vape ban is here. It's not just about THC. Here's what it might mean for you. Understanding Texas Laws on THC Vape Pens The Webb Firm, P.C.