The Corn snake grows up to around 72 inches (1.8 metres). The 'morph' of a snake has no bearing on its size - they are simply colour variations that have been introduced through selective breeding.
they start out about 7 inches some grow up to 3 foot 4 foot others grow up to 5 foot 6foot and in rare cases 7 feet depends how much u feed themm if u feed them every 5 days u should end up with a...
They used to be VERY rare - However - more breeders are using selective breeding to produce colour variations on the original 'red blotchy' pattern - creating more albinos.