Marijuana growers gathered in the pot-smoking haven of Europe for a trade show that is taking on the trappings of a major industry expo, complete with scantily-clad models, glossy brochures and, of course, samples.


But models don't offer their smoke samples to smoke, but instead talk about the importance of fertilizers, necessity of artificial humidity and try to explain the intricacies of hydroponics culture such as the iGrow-box Intensive Irrigation System.