The best experimental U.S. strains can be found here.
ABOUT U.S. STRAINS
After years of operating in the dark American growers have found freedom and with that comes great creativity. U.S. strains are characterized by a process of perfecting important traits like taste, high and yield. Often these cannabis strains are the fruit of a collaboration between seed banks who try to expand the traits of their flagship strain. Be on the lookout for exciting genetics and keep in mind that these are often regular seeds, just like the cannabis purist wants.