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Cortland apples Photo: Julie Weisenhorn, UMN Extension |
More importantly, frozen apples should not be picked until the fruit thaws out as the frozen fruit will bruise and be unusable. Late fruiting apples like U of M's SnowSweet are more at risk to freezing.
After a freeze, leave the apples on the tree wait till midday when they have thawed out. At 22°F, the fruit will freeze hard and cells will break down. So if a very cold night is ahead and your apples are still on the tree, it's best to change your plans and get picking!
Author: Julie Weisenhorn, Extension Educator - Horticulture