One Thousand Questions in California Agriculture AnsweredWickson, Edward J. (Edward James)
Science
One Thousand Questions in California Agriculture Answered
Wickson, Edward J. (Edward James)
Agriculture -- California
It is true that the French varieties of English walnuts have produced
fruit the second summer of their growth. This does not mean, however,
that you can count upon a crop the second year. These are usually grafts
in nursery rows, and one would have to wait longer, as a rule, for trees
planted out in orchards with a chance to make a freer wood growth. This
is rather fortunate, because it is better to have a larger tree than to
have the growth diverted into bearing a small amount of fruit while the
tree is very young. We do not know any advantage in getting nuts the
second year except it be to see if you really have secured the variety
you desire to produce later.
Handling Walnut Seedlings.
What is the best time to transplant seedlings of the black walnut?
Transplant during the dormant season (as shown by absence of leaves)
when the soil is in good condition. Handle them just as you would an
apple tree, for instance.
How to Start English Walnuts.
In starting English walnuts, shall we get nursery stock grafted on
California black, or shall we start our black walnut seedlings in
nursery plats, or plant the nuts where the tree is wanted, and graft
them at two or three years? What is the advantage, if any, of the long
stock from grafting high, over the grafted root?
If we had the money to invest and were sure of the soil conditions,
etc., we should buy grafted trees of the variety we desired, just as we
would of any other kind of fruit. If we were shy of money and long on
time, we would start seedlings in nursery, plant out seedlings, and
graft later, because it is easier to graft when the seedling is two or
three years in place. We count the planting of nuts in place troublesome
and of no compensating advantage. The chief advantage known to us of
grafting high and getting a black walnut trunk is the hardier bark of
the black walnut.
Walnut Planting.
I am planning to plant walnuts on rather heavy soil. I have been told to
put the nut six inches below the surface, but think that too deep, as
soil is rather heavy.
In a heavy soil we should not plant these nuts more than three inches
below the surface, but should cover the surface with a mulch of rotten
straw to prevent drying out.
Pruning Grafted Walnuts.
Should English walnut trees be pruned? I have along the roadside English
walnuts grafted on the California black, and they have grown to very
large size and the fruit seems to be mostly on the outside of the trees.
English walnuts are not usually pruned much, though it is often
desirable, and of course trees can be improved by removing undesirable
branches and especially where too many branches have started from
grafts, it is desirable that some be removed. They should be cleanly
sawed off and the wound covered with wax or thick paint to prevent the
wood from decaying.
Pruning Walnuts.
When is the best time to remove large limbs from walnut trees?
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