I have a couple of questions about pruning grapevines:
1) Late last spring, I planted 3 Concord grapevines. (I realized later that Concord grapes aren't the best choice for N. GA, but I still want to do my best to care for them.) They starting leafing out a couple weeks ago, and look pretty good. I have never pruned these grapevines, either last year or this year. I didn't know if I was supposed to. Is it too late to prune them now? Also, should I put up some stakes/trellises for them?
2) Early last month, I planted two Delaware grapevines. One of them is still alive, but one died. The nursery just sent me a replacement (which I received yesterday). They also sent an instruction booklet, which I don't think they did a month ago. Anyway, the booklet had a diagram showing how to trim both the roots and the cane of the grapevine, and how deep to plant it. I followed the instructions as much as I could. However, that made me realize that I didn't do any of that with the other grapevine I planted last month. It's obviously too late to trim the roots of that grapevine or to plant it deeper, but should I try to prune the cane at all? It's slowly leafing out, but has been under some drought-stress, so lately I've been watering it every day.
Thanks for any help with my questions.