First Avacado tree: Haas ? http://i464.photobucket.com/albums/rr4/earthfriendly13/100_1017.jpg http://i464.photobucket.com/albums/rr4/earthfriendly13/100_1018.jpg Second Avacado Tree: http://i464.photobucket.com/albums/rr4/earthfriendly13/100_1015.jpg http://i464.photobucket.com/albums/rr4/earthfriendly13/100_1019.jpg
I suspect that they were grown from seed and are not grafted, as I see no flowers on them. If they do produce fruit, then pictures of the fruit would help with identification.