The sun serendipitously shone at an angle that allowed the chain-linked fence to cast a fish-scale pattern! I love seeing unexpected beauty in industrial objects.
Because it grows rapidly and then you need to trim it so your lame bollard doesn't get swallowed up! Though it looks like the triangular-shaped concrete was a later installation... either way, bad design. Hopefully this wasn't the work of a professional landscape architect!
I find clowns creepy.