1 OZ DEEP SOUR KUSH BY FIRE SALE FOR $120!! Sour Kush is a cross between OG Kush and Sour Diesel. It is a hybrid cannabis strain, featuring both Indica and Sativa effects, although it is Indica dominant. This relaxing blend will leave users feeling relaxed and euphoric, with an enjoyable boost in overall happiness. THC content of Sour Kush is around 20% to 22%.