This section is from the book "The Gardener's Monthly And Horticulturist V26", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
Prof. Groff says: "I have observed that the peach tree frequently does remarkably well on the north sides of hills and mountains, where the cold lingers longest in spring. I have seen it cultivated on such spots when it refused to do well in any other spot in the region. The hint may be worth something".
[Peach trees often suffer by the temperature of the soil going beyond 80°. A north aspect is favorable to low temperature, and flower and leaf-buds are excited prematurely by early suns, when at low elevations or on warm aspects. The peach is the healthiest when there is no disposition to growth till the spring time has fairly come. This is another reason in favor of a northern aspect. - Ed. G. M].