I so hope someone can help with this. I have two, two year old table grape vines in the hottest part of my yard in the sunniest part of San Francisco. They typically get about 4 hours of sun and a lot of heat all day long. I pruned them in November, they seem healthy with lots of growth and leaves however they have not produced any flower at all.This is my second try at growing grapes, my previous try was with wine grapes - same problem, no flowers even after 3 years. Will I ever get flowers on my vines?