The trees are vigorous, healthy, hardy, and resistant to drouth. Consorted with any stone-fruit it should impart these qualities in some degree to the resulting tree. On the Station grounds, _Prunus davidiana_ is growing with vigor and health despite the fact that in the ten years of its existence here we have had all but record-breaking extremes of cold, heat, drouth and rain--a decade long to be noted for its extremes of weather. It seems to stand the heat of Texas, and in Minnesota has withstood cold as low as forty degrees below zero, a temperature which kills commercial varieties to the ground. It cannot be fruited, however, in cold climates as its buds swell quickly with rises of temperature and succumb to subsequent cold; neither will it fruit in regions of late frost since it is one of the earliest species in the genus Prunus to flower. In Texas and southern California, according to the United States Department of Agriculture, it is proving resistant to drouth and in the latter region to alkali as well. In very dry and exposed places, it is said to lose its tree-characters and to become a thrifty shrub. Present nursery practices in growing peaches are unsatisfactory in the extreme. More and more, pits from canneries are being planted for stocks. The pits come from a great diversity of varieties and the resulting seedlings are variable in vigor, health, size and capacity to take the bud. Should no unsurmountable weaknesses appear in _Prunus davidiana_ it is almost certain that its seedlings will be more satisfactory as stocks for the peach than those from either cannery pits or from pits grown on southern wild trees. The trees do not fruit well in this climate, even when buds and flowers escape the cold, possibly because of infertility of bloom, and for this reason, the chief objection so far, some favorable region would have to be discovered in which to grow the pits. As one might suspect from its similarities to the several stone-fruits, _Prunus davidiana_ gives promise of being a go-between in hybridization. I. V. Mijurin, a noted Russian hybridist of Kozloo, Russia, has crossed the Davidiana peach and the dwarf almond, _Prunus nana_, with the idea of getting a hardy fruit for central Russia. The resulting offspring, according to Mr. F. N. Meyer,[179] looks in tree like the peach-parent but the fruit is more like that of the almond-parent. The fruit of the hybrid is inedible but the plant is a handsome ornamental. Mr. Mijurin states that while neither of the two parents will hybridize with the common peach, this hybrid does. _Prunus davidiana_, then, like the Sand Cherry of the Western Plains, may prove to be a valuable go-between in hybridizing species of Prunus.