Hey, there's a bunch of post on here about camouflage. Tlranger has a thread with pictures of his set up. It would be worth you while to hunt them up. I have a post or two about what I do. I usually hide groups of 2 or 3 around. Tlranger camos his whole garden, & he has awesome pics of it. Two extremes. Maybe you can come up with something inbetween that will suit your needs. Each garden/ grower is unique unto its own. Play with it & have fun at it, but by all means, do it.
Maybe something as simple as a few potted cedars/spruce on the tall side scattered around between your plants & the builders will do the trick. You're only limited by your imagination.
But by all means, check out tlrangers set up. Even if his style doesn't fit your situation, the pics will make you smile.

PEACE.