Blockhead (also called Buruandi) is a hybrid strain from Genehtik of Spain that crosses an unknown strain with Sweet Tooth, a winner of the High Times Cannabis Cup. The results produce an aromatic plant that smells musky with hints of oak.

Blockhead purportedly grows large, dense flowers on a stout plant with an effect that leans toward the sedating body high associated with indica-leaning flower. The fan leaves display burnt-orange, reddish hues, while the colas typically turn bright green. With medium yields of hard, solid nugs, Though indica-leaning, Blockhead is a unique strain that displays heady, uplifting characteristics as well.