Onyx is a legendary auto that was originally created in 2007. It has been continuously improved since then and is now considered to be one of the most potent and flavoursome auto strains available. Its genetic line originates from AK47, White Russian and Jack Herer, with a secret ingredient. Plants grow fairly tall for autos and produce a strong hash passion fruit smell with citrus tones. Due to its height, the yield is impressive also. This strain shows exactly how far auto-flowering genetics have come in the last 8 years.