"...Orange trees are long lived. One of the original parent tree from which most existing Washington navels in California have been cloned is still going strong after coming to this country in 1873."
http://cekern.ucdavis.edu/Custom_Program143/Orange_Growers-_Maybe_It%27s_Time_For_a_Tree_Change.htm
A mature plum tree typically takes about 3 to 5 years to bear fruit.
A tree has to bloom before it can bear fruit.
because trees have genders, if your tree is a male it will not bear fruit but if it is female it will bear.
All fruit trees flower before they bear fruit. That is, all fruits were first a flower. It is possible to see flowers on a tree that has already produced fruit or even see flowers and fruit on the tree at the same time. However a flower precedes each fruit.
2-4 years
A lime tree typically takes about 2 to 5 years to start bearing fruit.
1 second
A Meyer lemon tree typically takes about 2 to 3 years to start bearing fruit.
A clementine tree typically takes about 2 to 3 years to start bearing fruit after it has been planted.
A peach tree typically takes about 2 to 4 years to start bearing fruit after it has been planted.
A plum tree typically takes about 3 to 5 years to start bearing fruit after it has been planted.
Olive is a fruit from the olive tree. Technically, olives are a fruit.