Cold weather can reduce the enzymatic activity of plants. This interferes with the plant's nutrient intake, as the plant secretes enzymes to digest the surrounding soil material. As a result, this can hinder growth or even more seriously kill them.
How does frigidity affect plants?
Cold freezes plant cells, causing damage and blocking the flow of nutrients and water. In small branches and twigs, living xylem is much more susceptible to cold than cambium and phloem. 2020
How do plants react to the cold?
Plants respond to low temperatures by activating metabolic pathways that protect cells from low temperatures and frozen conditions. One of the conservation strategies is to accumulate sugar. This lowers the temperature at which ice forms, similar to the effect of salting the road.
Does cold air affect plants?
Plants do not generate heat by themselves, so they are not affected by wind chill. However, cold, usually fairly dry winter winds can damage plants by drying them. This is especially problematic for evergreens whose leaves are exposed to the wind during the winter. 28янв. 2019
How bad is the cold for plants?
Freezing Light-Kills soft plants at 29 to 32 degrees Fahrenheit. Moderate Freezing-25 ° to 28 ° Fahrenheit is widespread and destructive to most vegetation. Severe or hard freezing-below -25 ° F causes enormous damage to most plants.