When planting a North Privet hedge how close is to close? I've read
they are generally planted 1 - 3 feet apart.

My hedge is going to be 3 feet tall and 1 - 2 feet wide. I want a
dense hedge so I was thinking about planting 6 inches apart. Is there
anything wrong with this?

The plants I've been buying are 1 - 3 feet tall rootings. Should I
cut then back so they are uniform is size? If so when should I cut
them back?