We have grapes vines that are about 3-4 years old and have not produce any fruit yet, and the one that has has one bunch. They are in clay which i learned is not good for them. They are brittle looking like twigs for the most part. There is some green growth. I do have another spot for them but I do not know how to transplant them. I don't want to involve chemicals since we grow them to be all- natural. and i am using metal stakes and wire for them to wind on.