Devil’s Lettuce Devil’s Lettuce cannabis strain (30% sativa / 70% indica) is a cross between Shiskaberry and Great White Shark cannabis strains. The Devil’s Lettuce strain has enormous medical benefits and is known for its high CBD levels ( 6% CBD). In other words, if you’re in hell, it will make you forget all your sins with its ability to wash away the pain. With this indica-dominant hybrid, you can expect a sweet and spicy aroma and a powerful high that will relax each and every muscle and hit you with an average THC level of 18.6%.