Pad? Don't you mean 'mat?' Sorry...I'm the semantics police...just how I am.
Yeah, I don't know that a dwarf will get very much light having a 6' tall fence just to the S of it (unless you're in the southern hemisphere, that is LOL). If you had a taller species to plant there, it'd probably do well once it was established, but I wouldn't recommend such a location for a dwarf.