Blueberry Crumble has been rapidly gaining notoriety for being an increasingly high THC strain. It shares it's lineage with Jenny Kush, but is a different mix of the two genetics.
Because of this, it shares some of the attributes with Jenny: Relaxing, uplifting effects and high THC. Recent batches have tested as high as 34% THC. It also has a superior terpene and total cannabinoid content.  
Blueberry Crumble tastes sweet with notes of flower and citrus, and has been often described as having a dessert like flavor.