OG 18 is a hybrid marijuana strain andaphenotypeof OG Kush This strain sometimes called Private Reserve OGproduces longlasting sedative effects and pairswell with leasure and relaxationOG 18 has a distinctdieselkush flavorwith sour undertones This strain was a High Times Cannabis Cup winner in 09 and 10 Growers say OG 18has an indoor flowering time of 9 weeks