Lumpy's C-Runtz is an indica-dominant strain that is a cross between Runtz and another unknown strain, according to a cannabis dispensary in San Francisco. It debuted in legal markets in 2022 and has gained popularity according to a cannabis delivery service in San Francisco. The strain is known for its sweet and candy-like flavor, with a combination of fruity and tropical notes. The exact lineage aside from Runtz is not widely publicized.