I live in Central Florida and the summers are brutal on the plants, thanks to the heat and insects. The leaves of many vegetable wilt within 20 minutes. I've found patio screen above the garden has helped to reduce the intense heat allowing the plants to continue to produce. Now I'm building a screened in garden (screen on top and around all 4 sides) but I don't know the type of screen I used for my original garden. I found a patio screen that protects from UV and claims 90% of the heat won't go through. But I'm worried the mesh is too dense, and it won't let enough sun in. My new garden should get about 5-7 hours of early afternoon and evening sun through the summer, and 3-4 hours of early morning to mid day sun during winter.

Do you recommend a screen that does a good job of blocking harmful UV rays and keeping the insects out? But at the same time, allowing for good sun?

I could be wrong. But, i belive plants all need some uv light. Also , screen that blocks out 90 % of heat ? No way, there would be no lite at all. Heat, is still going to be there.

Use your better judgement !
I'm guessing the screen is to dence.

Hears my ideal.
Shade cloth, or screen on top and three sides. Face, open side east, so veges get, direct moring sun, untill about noon.
Get the ideal ?
And ! When, weather cools down in winter. I don't belive, any shade will be needed, at all. 😁
😎😎😎