[fred cook]

Plant some new saplings and use a wood or steel stake to make holes around the tree(s) out at the end of the limbs. Add fertilizer to the holes and water the new trees. You will be surprised at how fast they will grow. Years ago, my father had a small black walnut tree in his yard in N. Georgia and did this to it. In just a matter of 4-5 years it had about doubled in size! Good luck!