As noted In Bulletin 124, the Southern Utah Experiment Farm is located in Washington Field, southeast of St. George. This tract of land is comparatively low and flat and bounded on three sides by hills. On the front or north side it extends to the Rio Virgin river, which enters and leaves the valley through small canyons. This entire area has a very poor water and air drainage. Frosts occur here much more severely and much later than on the surrounding bench land.
Ballantyne, A. B., "Bulletin No. 128 - Blooming Periods and Yields of Fruit in Relation to Minimum Temperatures" (1913). UAES Bulletins. Paper 79.