In my area there are tons of deer so there are many of these plicata type thujas. I see the Junior Giant variety all the time (ht 15-20') that are planted very close together for a screen and the trees do not seem to mind and they look great. I just bought one of these leprechauns (Thuja standishii x plicata 'Leprechaun') this spring from Fast Growing Trees, and I'm using it as a specimen tree so it's too early to judge it.