Sustainability is also a key concern to one of the “greenest” markets: cannabis. Canada’s first nationwide cannabis packaging recycling program has been rolled out by recycling experts TerraCycle and cannabis brand Tweed. Last year, Canada became the second country after Uruguay to legalize recreational cannabis use. Tweed has voiced the need for a recycling system for all the new containers, tubes and packages created by the growing cannabis industry, in a bid to divert these away from landfills and upcycling them into other products.