Beware of giving plants too much shade. Most of the recommendations I've heard say 30% shadecloth for most garden plants. Good luck finding 30% shadecloth at a retail outlet. I had to order it online. It was a while back and I don't remember where I got it from, but I ordered 100' of it. I won't be running out any time soon. My tomato, squash and pepper plants were very happy with the 30% shade overhead. They get late afternoon shade from a nearby tree.
For my chicken coops I use 70-80% shadecloth which you can get at Home Depot or Lowes. Unlike Gallo, I haven't been able to get anything green to grow over my run, so I stick with shadecloth and everyone is happy.
I am running the 70% on my greenhouse, and all the plants are loving it, but I do have it open on the east and west ends, so I'm getting morning and evening sun, just heavily shaded during midday hours. Will be starting the tomato and chili harvest tomorrow!