I am bidding a landscape restoration at a local school. My plan calls for the installation of Compacta Hollies as a back border against the buillding. What is the ideal spacing for these shrubs? What are their growth charateristics, how high do they get if left alone? I plan not to add mulch, just plant Monkey grass to fill out the beds. What is the optimal spacing of liriope (monkey grass). 4" pots. How long will it take to fill out the area thick? The area is 90'x5'. How many plants? kenny.