is this a grated tree or a seedling tree?
is the tree in the ground or a pot?
is it in a full sun position?
don't have any experience in growing avo's to eating stage but your
time span seems to be a long time for them surely?
With peace and brightest of blessings,
len & bev
"Be Content With What You Have And
May You Find Serenity and Tranquillity In
A World That You May Not Understand."