Parental Lineage of the Heavenly Querkle Cannabis Strain Developed by the Amadeus Genetics, the Heavenly Querkle cannabis strain is the product of crossing the Heavenly cannabis strain with the Querkle strain. From this crossing, it is rather obvious how the product of the two got its name - by combining the names, simple. The Querkle is the mother plant in the breeding program, and which is then pollinated by a plant from the Heavenly Strain. Querkle is the kind of cannabis plant that is ...