Now that's what I call weed. The biggest plants grow outdoors in the tropics/subtropics.
Here's some giant outdoor sativas from Australian sativa breeder/grower Kangativa. His strains include landrace sativas personally collected from Indonesia, Thailand and Mexico as well as a stabilized line of Mullumbimby Madness from the early eighties. Kangativa has crossed these landrace strains to various Dutch (Neville and Shantibaba) varieties such as NL#5Haze, Jack Herer and White Widow, as well as old school Norcal Skunk & Norcal Haze from the emerald triangle.