Hello everyone i live in Northern CA Zone 9 where it gets very hot. I'm planning to build a large shade structure this summer to grow my expanding collection of seedling as well as a few nature trees under. The company I'm ordering the cloth from offers it in varying different blackout precentages. I currently use some box store cloth in a smaller structure but the leaves still burn under it. I'm willing to except some leaf burn as it goes with the territory but i want to make sure the trees get enough sun to grow. Anyone have any experience with this?