The Purple Kush is a clone that has taken over BC (British Colombia) and produces very nice plants that are heavy with resin with an acrid hash-like taste. The Reeferman team found the Purple Kush to be somewhat lacking in vigour with smaller yields than were to be expected.  They therefore chose their Early Island Indica male to pollinate the Purple Kush. The Early Island Indica is a tough inbred strain but in F-1 crosses it had been notices to impart serious resin production and also earlier finishing times. Offspring strains are also noticeably more mould resistant when grown outdoors.