Walnut tree issue
The ground around the base of my walnut tree is rising, what causes that and sprouts are showing on branch alot! The tree is at least 40 years old.
Not sure exactly what you mean, but it is normal that as trees mature the roots also grow thicker so that those near the surface will begin to push up the ground around the tree. If you have pruned the tree heavily or it has suffered a of damage from wind etc., it will produce a lot of sprouts in reaction.