Shade cloth is a UV shield for plants. It comes in any amount of protection, 10% to 90%. It also comes in a multitude of sizes, width, length or by the foot! It comes in several colors, white, black… green etc. There are a host of retailers who sell it, Green house & nursery suppliers, farm stores like Tractor Sup, even amazon as a boat load of it. It can be ordered from lowes. Uses – my example – My house faces south, the porch is a concrete slab, front – brick. Any plants I grow on my porch literally bake in august heat during an Alabama summer. I bought a shade cloth roll 20ft X 6.5ft with 50% UV protection. I have a very small chain running between supports for the upper deck (duplex). The cloth comes with plastic grommets. I hung my shade cloth from the chain. It has preformed remarkably. It’s stood up to storms, rain, wind and the sun. My plants have done remarkably well also. They are still growing, pepper plants still producing peppers. Usually everything would have been dead by the end of August. Also, it blocks enough UV rays to make sitting on my porch more comfortable on sunny days. I highly recommend this product. If the sun is an issue for your plants or you want to spend a little more time on the porch.