Kansas State University Horticulturist Ward Upham said of the cold weather, “If we had a tree or even some sort of small fruit bush that was in flower, it very likely could have killed the fruit buds.”
Apricot and peach trees are the most likely to be affected because they bloom early.
To see if your fruit trees were damaged by the cold, pull a bud off the tree and slice it from the base to the top. If the inside is green, that bud is still healthy. However, if it's brown or tan, don't expect any fruit.
Upham suggests pulling ten to twenty buds off the tree to see how many fruit buds were damaged.
Upham says other fruits may have been damaged as well.
“We did have some damage from the cold winter temperatures. Therefore, our thornless blackberries may have lost this year's growth on them,” he explained.
Fruit buds are usually damaged when it's 28 degrees or lower. People can help protect the plants by placing a sheet over the branches when cold weather is on the way.