Critical Kush grown by Jonny Chronic is a classic strain that has remained quite popular in Canada and in Toronto in particular.

Bred by Barney's Farm Critical Kush takes after its parental linage of Critical Mass and the coveted OG Kush strain. Critical Kush can be a mixed bag as many have found it to be relaxing while others have found it to be sedative. Critical Kush tends to vary greatly with different batches.