If your peach trees were in bloom or had already formed fruit and you had freezing temperatures over the weekend, then likely not. Unopened buds are more cold tolerant. So how can you tell if your peach buds are still alive?
To check for low temperature injury to fruit buds or blossoms, use a sharp knife or razor blade and cut the bud in half longitudinally. If the area in the center is white to cream color and the style of the pistil is has not darkened then no damage has been done. But if the center in several buds or blossoms is dark brown or black, it has been killed.
Ward Upham, Extension Agent
