When Universal nixed real pot on set, production designer Tomas Voth created faux plants using "trial and error" to achieve authentic look.
Oliver Stone's upcoming Universal film Savages has an all-star cast -- John Travolta, Uma Thurman, Blake Lively, Benicio Del Toro and Salma Hayek as the overlord of a Mexican drug cartel -- but the real star? Pot. And lots of it. When Stone and crew brought in large quantities of marijuana and plants for the film about pot growers, the studio balked.