A flowering OG Kush plant.

Kush refers to a subset of strains of the Indica species of Cannabis. The origins of Kush are from a landrace plant in Afghanistan and Northern India, with the name coming from the Hundu Kush valleys. "Hindu Kush" strains of cannabis were brought to the United States in the mid to late 1970s and continue to be available to the present day.

A close up of a dried "Bubba Kush" flower.

Kush strains were among those cultivated by the British firm GW Pharmaceuticals for its legally licensed commercial trial of medicinal cannabis.

This page uses some content from Wikipedia. See this Wikipedia article: Kush. The list of authors there can be seen in the page history there. As with the Cannabis Wiki, the text of Wikipedia is available under the Creative Commons Attribution-Share Alike License.