I live in Detroit, Michigan and I have a 5 year old almond tree in my back yard. Almond trees do live in North America climate. I received this plant by mail order, it was 1 foot high and now it is about 15 feet high. The nut is bitter to the taste and I have been looking for the kind that is sweet almond (regular kind you find in stores). Well I need to know what is the best way to grow almond from the nut. I tried several times and could not get them to germinate . Any input from you will be greatly appreciated.