Colorado is well known for indoor-grown marijuana, but because of our short growing season, the outdoor kind is another story. Grassroots Grown is trying to change that by nurturing everything it sells in massive greenhouses on a seventy-acre plot outside of Boulder. The result is suntanned, dark-green buds that might not have the shiny, artificial luster of their indoor counterparts, but certainly pack a massive punch in the potency department. We were most impressed last fall by their 707 Headband x Maui cross and a lemony sample of Vortex.