Hi I just bought a house that has quite a bit of fruit trees. I have kiwi and don't know much about them. I do know that you need a male and female to get fruit. I have 4 kiwi vines and they are producing fruit. I would like to know do you need one male for every female or one male for multiple female. I have noticed that one of the vines runes across the bottem and touching all the other vines. is that my male???