Have a fenceline (3) sided that I need to plant something on to block out neighbors. Exisiting is a very old chain link fence. 2 of the 3 sides is partial shaded and the other is sunny. I want a formal type hedge. Needing very low evergreen to block dogs view of each other.

Looking for 12' height max. Understandably I can keep taller trees/shrubs trimmed down but my concern is the root system of these larger trees over the years.

My main goal is fast growing... as fast as I can get. I've pretty much decided on holly as being my most logical choice... But I am so confused as to the zone conditions and the varieties and their growth rate... I have been researching for a variety now for well over a week and all I get is conflicting information.

Anyone out their have a similar situation and what did you plant?