I had Cyprus trees in my backyard that served as a privacy fence. However, due to the ice/snow storm that we had a few months ago, they collapsed under the weight of precipitation. I would love to install more trees instead of a regular fence, but the company charges 85% of the total trees ordered for planting. Therefore, I am getting a regular fence installed. Zoning laws prohibit fences to be higher than 6 feet. So, my question is : is there any way to extend the height of the fence by affixing some kind of plant to the top of it? Thanks!!