I can't remember how long it's been. Ah! 7 years, 2014, since this Thompson Grape vine was gifted to me. It grew a strand or two clusters in 2018. But they never matured. I remember the first year when it fruited. The grape did not form the usual inverted triangle shape cluster. It was like a "splat" shape. In October of 2020, it was kind of okay, but sour, unedible. They were a pretty looking cluster though. This is the first year that grapes looked like a grape in it's cluster form. I already noticed today that something is already enjoying the fruits. I think it's those neighborhood jays and doves or ??.
I learned this year in spring - the grapes 'flowered', too.