The next spring, cut off the upper part of the stalk about two feet over the bud. You will tie up to it the budded shoot, which by the fall might be up to 6 feet high.
Spraying and cultivating is required as has been said above.
Owing to the fact that the budded plant in its first year continues to grow deep into fall and in many cases its upper part does not harden well, wrap the budding with straw for winter.
4. Harvesting
In the Carpathian Mountains when they gather the walnuts in the fall they mash them down with a very long and quite thin hazel sticks. Doing that they beat off the thin tops of the walnut branches. They say such an operation causes a better crop of the nuts next season.
5. Giant Walnuts and their problems
Some giant walnuts on the same tree have sometimes small kernels or withered ones. In the Carpathian Region they do not know what to do with such a problem.
It seems to me that we in Canada have to solve it. Maybe it is because of the bacterial disease, or it may be a lack of the proper fertilizer.
In Warsaw I have seen the giant walnuts sold not being dried.
6. Reforestation with the Carpathian Walnuts