I live in a sub tropical climate in Brisbane, Australia and I am presently picking a great harvest of grapes.
I have 4 vines of black grapes, 2 each of Isabella and Chambourcin. The Isabella produces a large berry a bit larger than a man’s thumb nail, that is crisp and sweet and refreshing, especially when refrigerated. The Chambourcin is an amazing vine, producing dense bunches of really black, tightly packed berries in large numbers, so many of them that I had to thin by cutting the developing bunches in half. The berry is not large, about 1/2" or so, not really sweet, but put them in the fridge and you can eat them all day. Both varieties produce some seeds.
The photo shows the Isabella on the right side. This is the first of 3 pickings we have done and there’s one more to go. Slowly eating our way through the last one.
I just picked the last 3 bunches of the Chambourcin grapes today. They are amazing vines producing literally more than a couple of dozen bunches between them. I have to say that I have become very attached to them as an eating grape, often having a bunch or two before breakfast. Their sweetness is subtle, the bunches are really tight and the grapes are really black and quickly give you a black tongue. They do have some seeds (not many) and I just spit them out or swallow them.
There are still a couple of bunches on the Isabella as they didn’t set all their bunches at the same time and I expect to cut the last of them later this week . For their bounty I am pulling for the Chambourcin next season. I am really interested to know if there’s anyone’s who shares the same opinion.