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fbmg.org/files/2020/10/Prot...-Winter-Freezes.pdf

We will begin this article by explaining how plants turn into those mushy messes after a freeze. Explained very simply, when the temperatures begin to drop, foliage and fruit will begin to lose their heat. The water inside a plant freezes causing ice crystals to form. These crystals break the plant’s cell walls. When the temperature warms the cells lose their fluids, die and turn to mush.

Our most common challenge is the marginal freeze. This only lasts a few hours with temperatures dropping to below freezing in the early morning hours, then back up above freezing by mid-morning. This is a quick temperature change, not too unpleasant but enough to kill any buds or blooms on fruit trees. By planning ahead, we can do a lot to protect our plants. Additionally, the less wind involved, the more effective our efforts.