Now in conclusion let me say, what is the lesson to be learned? First, as to the propagation of the Persian walnut, great care should be taken that only trees that are hardy should be propagated from, as well as having good bearing qualities with a first class nut. Second, after a freeze such as we had last winter, a special effort should be made to save the newly planted tree by close and severe pruning. As, for example, I had a very fine two year old Hall Persian walnut which was referred to me as dead. I cut the tree off about 4 inches above where it was budded on the black walnut stock. It was not long after that signs of new life appeared and eventually it made a very fine, handsome tree. Nature does indeed some wonderful tricks in this respect by which we can learn valuable lessons; and chief of these is close pruning.
Such a cold wave may visit us only once in a lifetime and should not discourage us from carrying nut culture to its highest development. We must not think for a moment that other walnut sections are exempt from similar visitations. They have them in the Pacific Northwest, and in France and Germany.
As regards the walnut industry for Lancaster county or Pennsylvania in general, I am safe in saying that a fair percentage of the farmers are taking hold of it. This is because of the fact that the San Jose scale has practically destroyed all the old apple trees around the farm buildings, and, not wishing to have the building denuded of the customary shade and fruit, nut trees are planted instead. This is in reality the practice prevalent in France and Germany where they utilize every foot of ground to profitable account.
The life of an apple tree is from fifty to sixty years whereas a walnut tree is just in its prime at that age and destined to live for hundreds of years afterwards. Then again the ravages of the chestnut tree blight are destroying the cultivated paragons just as freely as the chestnuts in the forests, which in a few years will be things of the past, thus giving still more room for walnut and other nut trees.
The Northern Nut Growers Association was organized for a grand and noble purpose, that is to stand together shoulder to shoulder to devise ways and means to bring nut culture to a grand and glorious success.
Mr. Corsan: The temperature Mr. Rush spoke of rather surprises me. Last year at Toronto it did not fall lower than 9 degrees below zero. We had summer almost until New Year's and then a very severe winter until April. I didn't notice any evergreen trees killed, but at Detroit, the Bronx and various other places, I never saw a winter so disastrous for killing evergreens.
The Chairman: Not only that but nurserymen all over eastern New England said they suffered greater losses last winter than ever before.
Prof. Smith: I would like to ask Mr. Rush if it would be possible to cut scions by December 1st, so as to escape danger from such great freezes.
Mr. Rush: I really have little experience in keeping scions. This fall I put some in the moist cold earth in the cellar. I think the experiment will be successful because I have known chestnut scions cut in the fall, to be kept under leaves in the grove till spring.