Icy conditions in Michigan created a strange phenomenon in an orchard — “ghost apples.”

Andrew Sietsema told WOOD-TV he was pruning apple trees Wednesday in the Fruit Ridge area of Kent County in Michigan when he came across the interesting formations.

The freezing rain coated rotting apples, creating a solid, icy shell around them. But because apples have a lower freezing point than water, it was warm enough that the rotting apple inside turned to mush.

Sietsema said when he pruned the trees, some of the mushy apples slipped out of the bottom of the ice casing, leading to a “ghost apple.”

Western Michigan has been experiencing extreme changes in temperature this week, from an Arctic blast, to above average temperatures to a day of freezing rain, according to CNN meteorologist Judson Jones.

“Freezing rain will turn anything it touches into a glaze of pure ice. In this case, unpicked old apples,” Jones said.

Sietsema told WOOD-TV  Jonagolds are one of his favorite apple varieties. “But we’ll call these Jonaghosts.”