Freeze Damage. Depending on how developed the blossom is freezing temperatures may cause a lot of damage or not very much. The blossom in the bud stage, or closed stage, is able to withstand colder temperatures than an open bud. If the trees experience warm temperatures leading to bud maturity and blossoming and then are exposed to cold temperatures there is a good chance the blossoms will be killed. Here is a chart depicting the kill rate based on temperature and maturity for pears and apples. Here is a link to a chart for stone fruit. It may not be preventable and it definitely isn’t favorable to lose blossoms to cold temperatures but it does solve the question, “where’s my harvest?”. If you experienced frost problems you can check out this post to evaluate the viability of the blossoms and determine where pruning can help.