"jetgraphics" wrote in message
...
I would appreciate any suggestions, ideas, or criticisms of the idea of
using a trellis & wire system to support vines (climbing or drooping) to
shade a rooftop and house side walls in Zone 7 (hot & humid).

Would suspended planters for droopers also work?

Furthermore, if anyone has information on suitable candidates for an
edible
sunshade, please post it.

Kiwis would be a good choice (if you're willing to consider perennials).
There are hardy varieties than can be grown to zone 4, or the more familiar
fuzzy varieties, which are hardy to zone 8 and might be ok in zone 7 if you
got lucky. They're fairly attractive and grow quickly, but take a while
before they'll start giving fruit. But would be lower maintenance than
annual vines, and you'll eventually get a lot more height out of them.

The problem you will run into with most typical climbing vegetables is that
they don't grow *that* tall. You might be able to get about 8 ft out of pole
beans, and 10-15 ft out of some types of runner beans, but that'll be about
it. Curcubits (squash, cukes, pumpkins, etc.) will probably top out at
around 6-8 ft. They (both beans and curcubits) also are fairly prone to a
variety of pests: leaf-eating insects, soil dwelling insects, and various
mildews and so on. Doesn't mean you shouldn't try them; just means they're
one of those plants that can be hit-or-miss, even for experienced gardeners.

If I were you, I'd experiment with the edible shade concept for now, but
also plant a proper row of quick-maturing shade trees. By the time the trees
get taller than the crop plants, you'll probably be sick of trying to grow
dinner on the side of your house and be ready to move your efforts to a
proper garden space.