Gruntz Known for energizing highs, this strain is a great option for a wake and bake to fuel whatever the day has in store. The effects of this strain have been said to have a longer last high than the average strain. A cross between the popular strains Gelato and Zkittlez, the flavor profile is an intriguing mix of fruity, citrus, sour notes. Phenotype Indica Cross Gelato x Zkittlez Notes Grapefruit, Sour, Fruity.