Marcus created Cult Classics Seeds to pursue his love of genetic cultivation. His life-long dedication is to breeding high-quality and collectible seed varieties. These passions include propagating Type II cultivars, known for producing desirable concentrations of terpenes with consistent qualities and noticeable quantities of other constituents. He is continuously breeding for unique flavor profiles and intense results.

Recognized globally for his important contributions to seed genetics and modern horticulture, Marcus was named one of High Times Magazine’s up-and-coming breeders of 2016. His cultivar Xenu won first place in the dry-sift category at the 2016 Emerald Cup.