. Walnut growing in Oregon . stillates form, and naturally there is no pollinationand no crop. This should not discourage the grower or cause himto uproot his trees. Often by waiting a few seasons—if the treeis of the correct variety—the trouble may right itself. Manygrowers have gotten a crop from single trees where there wastrouble with the pollination by artificially fertilizing, that is,shaking the pollen from fertile trees, even black walnut, over thebarren pistillates. Birds, insects, and the breezes carry pollen fromone tree to another. Therefore, if nuts for seed are desired,keep each
. Walnut growing in Oregon . stillates form, and naturally there is no pollinationand no crop. This should not discourage the grower or cause himto uproot his trees. Often by waiting a few seasons—if the treeis of the correct variety—the trouble may right itself. Manygrowers have gotten a crop from single trees where there wastrouble with the pollination by artificially fertilizing, that is,shaking the pollen from fertile trees, even black walnut, over thebarren pistillates. Birds, insects, and the breezes carry pollen fromone tree to another. Therefore, if nuts for seed are desired,keep each grove of pure strain separate that there may be nodeterioration owing to cross-fertilization. But the mixed orchardmay bear best. Some varieties of walnut trees—notably the LosAngeles—are suitable only for shade in Oregon and should not beplanted with any other thought in mind. The staminate blossomsof this variety appear six weeks ahead of the pistillates and, therebeing no pollination, naturallj^ there are no Best in the World. Oregon Walnuts47
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