Raspberry ice: To keep raspberries at Afton Apple in Afton, Minn., from being damaged by the first frost of the year, an alarm sounds when temperatures drop. The owners then irrigate the fields, coating the plants with a protective layer of ice.
Raspberry ice: To keep raspberries at Afton Apple in Afton, Minn., from being damaged by the first frost of the year, an alarm sounds when temperatures drop. The owners then irrigate the fields, coating the plants with a protective layer of ice.