Beans are good, and okra loves heat. Probably not time for winter squash, but summer might do just fine. Cucumbers are quick, maybe try some of them. I've had cherry tomatoes start to fruit quickly, and some of the "early" varieties might produce for you. In fact, it might be worth it to try things out just in case. Might be a longer summer than usual :). Even if you don't get vine ripe 'maters, they ripen pretty well if picked at "blush", and green tomatoes are awesome fried. I think it's too early for the cool weather crops.
Depending on your specific conditions, you might try shade cloth over the seedlings for part of the day, and be diligent at keeping them moist.
Good luck, hope you'll let us know how it goes :)
Just sowed some bush and pole beans last week. Last years early July pole beans produced until mid-October.
You can still sow summer squash and cucumbers and have a good harvest.
You can start cabbage and kale in pots (you'll want to keep them out of high heat)and have a great fall crop.
I'd hold off on lettuce and spinach until at least mid-August for a cool season harvest.
This is a good time to sow beets, you'll just have to keep them evenly moist thru the hot dry summers of Ohio.
Some people sow turnips now, but I prefer to hold off till late August so I can get a freeze to sweeten the roots. Its also less of a chance of having bug damage on the greens.
Just keep everything well mulched as you head into the dry season and you'll be fine.
Please consider this and invitation to join us on the "Starting Our 2012 Fall/Winter Veggie Gardens" thread, and sharing your planting schedules with us? A number of us from different gardening Zones are following each other's progress toward the Fall-Winter season, so we get a better handle on when to plant what, and ya'll sound very knowledgeable on this subject.
Maybe some root veg like potatoes and carrots and onions. A light frost won't hurt them. A long summer could help, but even an early Winter would only mean an early harvest of slighty smaller vegetables.
Don't be fooled by the name "Winter Squash". All squash must have warm weather. Grow them exactly like summer squash. Only difference is that Winter Squash(Butternut, Spaghetti, Acorn, etc.) have thick rinds to last through winter after they were harvested in the fall(before frost). They do take longer to mature than most summer squash, so I'm not sure you have time to get them to ripen in your area. I'm thinking around110-120 DTM. So if you have 3-4 months of frost free weather left, go for it. Summer Squash, like Zukes will be ready in 50-70 days. Plenty of time for them.
Smaller Melons need at least 90-120 days to ripen. You might have a chance but you really should have started them in May.
Grow Bush beans. They'll be ready before it gets cold there. Cucumbers are fast too, so they are good to try.
Tomatoes, Peppers from seed will take too long. When do you get cold weather? Oct-Nov?
All seed packets should have a DTM or 'days to maturity' on them. From that and the time you have till first average frost, you should be able to select what you have time left to plant. Good luck... Kristi
You have enough time for bush beans, probably cukes and summer squashes. Might get some small carrots and you may even get some cherry tomatoes or you can try patio tomatoes in containers and take them in the house when the frost comes.