With the early warm temperatures we experienced this year the Fruit Trees were already beginning to bloom when the temperatures turned cold again. On March 15th the temperature at the Fruit Station dropped to 14 degrees Fahrenheit. Critical temperatures for frost damage of fruit trees varies by type of tree and stage of growth. Utah State University Cooperative Extension has a Publication that lists the temperatures and growth stages. It can be found at https://extension.usu.edu/files/publications/factsheet/pub__5191779.pdf.
We received some damage to our peach, pear and plums. Time will tell how much fruit was lost.
Below is a picture of a plum tree that was taken before and after the cold temperatures.