I went to an industrial grower trade show last year: "Cultivate 2016". Interestingly, there was one Cannabis exhibit, but it's clear more are coming. Once one of the big dutch-owned greenhouse operations starts growing cannabis, it's all over for the little guys :-)

http://cultivate17.org/

These guys are mentioning Cannabis support:

http://cultivate17.mapyourshow.com/7_0/exhibitor/exhibitor-d...

http://cultivate17.mapyourshow.com/7_0/exhibitor/exhibitor-d...