I was walking into an office building and noticed the landscaping: concrete, ivy, wood chips, and tidy, evenly-spaced.... hold on a second. I want to say "evenly-spaced flowers" but I'm the kind of guy that would want to drive over there and double-check before writing that they were evenly-spaced. They sure felt like they were evenly-spaced.
So, where was I... Oh yeah, so the landscaping in this interior-building alcove was all about control. The concrete controls the buried earth and prevents anything from growing there and allows dirt and foot traffic to be easily controlled. The ivy is a weedy and invasive plant that controls everything else--nothing else will be able to grow where the ivy is, and the gardener