A free-flowing meadow of grasses and wildflowers? An informal hodgepodge of fruit-bearing trees and shrubs that attract songbirds? An overgrown, impenetrable mixture of vines, shrubs and trees?
..........Well, what about this?
Could you have used Boxwoods instead? In my experience they don't do well on the barrier islands (this garden is on the Isle of Palms). Yaupon Holly (Ilex vomitoria) has greater salt tolerance and therefore is more vigorous in this situation.