OG #18, it comes from a ‘classic’ such as OG Kush. OG #18 has won a variety of accolades, including Cannabis Cup awards in 2009 and 2010, so let’s see what the fuss is about. OG #18 comes from DNA Genetics and is a phenotype of OG Kush. It is a sativa-dominant hybrid, also known as ‘Private Reserve.’ It provides an intense cerebral high soon after use and could help lingering doubts and worries melt away.