Okra! It's great fried and it naturally lightly thickens lots of things (like mixed veggies + tomatoes). It gets a bad wrap for being slimey, but unless you plan on eating it raw, steamed, or boiled that's not going to be an issue. It's a tasteless slime, whereas the green part is mild and the seeds are soft with a slightly sweet-corn taste.

Yard Long beans...they do best on a trellis and can be 8-12' vines pretty easily. They don't taste like a traditional snap bean, but they do have a taste some people like. I like them steamed and love them in stir fries. You can let the pods get 1-3ft. if you want, but I find that they're best in the 8-16in. range.

Basil does surprisingly well in hellish summer conditions. It needs water, though, and it may look 1/2 dead for most of the afternoon when it's very hot. It should perk up when the sun goes down and things cool off, so don't attack the issue with water to remedy the wilting if you're sure you've watered it well recently.

Corn and Melons both harvest in mid-summer almost everywhere. You may need to select varieties of melons that don't sunburn as easily, though.

Peppers that are at a fruiting-mature state set fruit in a much more noticeable rate under 30-50% shade cloth when it starts to get regularly get into the 90s.

Tomatoes...cherry tomatoes tend to do the best during extreme heat summers. They don't set full fruit set, but enough seem to get through the temperatures to get most people a few handfuls every few days. They require a lot of water in harsh summer areas, though.

Tomatillos harvest regularly in the thick of summer.

Summer squash does a decent job for most, but fruits can sunburn occasionally.

If you're in a true zone 10 you're probably going to want to plant the sweet potatoes in the summer, but you shouldn't expect to harvest until Sept/Oct.

G'luck.

Zone 10 in the summer you may not be able to grow anything during the blazing hot summer heat

z10 Ca is very different from z10 fla. Which is it?

As prevous posters mention, there is a distinct difference in zone 10's. I will add my 2 cents of what I am now experiencing in my zone 10, which is Southern California.

First about temperatures - for some reason, we have been having extremely cool winters - for us - many times in the past 3 months the temps have been down in the low 40's. The traditional rainy season has been extremely wet as well. Fortunately, we were looking at upcoming water rationing last summer, but the red flag warning is down now, as we had a bumper amount of rainfall. It certainly was an education in what natural rain water means to vegetables in particular, and other plants, fruit trees as well.

I guess what I mean is that this winter proved to be my best yields of cool weather crops - with an abundance of nice lettuces, spinach, bok choy, broccoli, etc., with the present upcoming cabbages looking surprisingly robust.

The warm weather seeds haven't been sown as yet - green beans, squash, zucchinis, etc., waiting for the soil to warm up a bit - but surely in another week the cold spells should abate. In the pantry, I have seedlings growing under lights of green peppers, tomatoes, tomatillo, and am hardening off some sweet potato slips that I started in a sunny window about a month or so ago. The slips were cut off and planted in small soil cups, treated to a week or so under lights, and are now outside in a shady area under a plastic cover, being hardened off. As soon as the outgoing veggies are pulled from the planter boxes, they will take their place.

As I said, that is my zone summary from California, I suspect my Florida counterparts are probably harvesting tomatoes by now. Mine will probably not be forthcoming until late August - if the fog banks don't interfere - sigh.

Hope this helps - a bit.

Bejay