Yes, I grow King of the North and I like it very much. Here is a link to an earlier post about them: What fruits did you eat today? - #360 by ztom
I also grew some Blue Bell this year and they are similar to KOTN. Bluebell is a little later and a little larger than KOTN, but much earlier than Concord. Both KOTN and Bluebell have good, strong grape flavor.
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