Back in 2015 when garden-products giant Scotts Miracle-Gro Co. formed its Hawthorne Gardening Company to sell indoor hydroponic plant-growing systems, Colorado had just approved adult-use cannabis.

ScottsMiracle-Gro has teamed up with Thece in a new kind of contest powered by Twin Galaxies. Columbus, Ohio-based ScottsMiracle-Gro will create a contest where participants can win free Miracle-Gro ...