Navel Orange Tree Lifecycle?
I have a 15-20 ft. tall navel orange tree in my backyard that once was full of dark green foliage and bore fruit as big as softballs. It has been in the ground for at least 15 years. For the last two-three years the foliage has gotten thinner and thinner and the fruit smaller and smaller. Most of the limbs in the upper part of the tree are bare of leaves.
Do navels have a lifecycle and begin dying? Is there a "maturity" for orange trees? I have noticed new growth from the lower part of the trunk and am wondering whether I should severely prune it back and let new growth begin.
Anyone had a similar experience? Anyone pruned back a tree and gotten it to grow back, fuller than it was before? Or is this just a tree at the end of its life?