If you're looking for a fast growing evergreen hedge then I recommend the Leylandii evergreen hedge which is a conifer and it's the fastest known evergreen hedge and the Leylandii will grow to a full evergreen hedge within 2 years as long as you take good care of it.
For optimal results of the Leylandii evergreen hedge the Leylandii evergreen hedge should be planted at a minimum of 2 ft apart.