Netherlands · founded 1994

Serious Seeds

Serious Seeds is the Dutch breeding company founded in 1994 by Simon, a former Sensi Seeds breeder who built the bank around a small catalogue of stabilized, regular-seed photoperiod lines that he has continued to refine for three decades. AK-47 is the strain most associated with the program — a Colombian, Mexican, Thai and Afghani cross first released by Simon in 1992 and carried under the Serious name since the bank's founding — and the AK line has won more than a dozen Cannabis Cup categories across multiple decades. The catalogue stays deliberately small at around a dozen working lines, all of which Simon selects personally rather than franchising the breeding work. Cherry AK is one of the more recent additions, selecting AK-47 phenotypes for cherry-leaning terpene expression while keeping the original sativa-dominant structure. Serious Seeds remains independent rather than absorbed into one of the larger conglomerate Dutch banks, which has helped preserve the original AK-47 working line through generations of counterfeits.

Reviewed 2026-05-23