Blueberry Yum Yum is a sativa-dominant strain cross between the strains Blueberry x Durban Poison. The buds of Blueberry Yum Yum are dense and covered in a layer of trichomes, giving them a frosty appearance. The buds are also known for their dark green and purple hues, which are a result of the strain's genetic lineage. This strain s primary terpene is myrcene.