Frostfølsom

Frostfølsom is a Norwegian term that describes a plant's susceptibility to frost damage. It is used to categorize plants based on their ability to withstand freezing temperatures. Plants that are frostfølsom are likely to be injured or killed by even light frosts, typically those occurring in the autumn or spring. This sensitivity is often related to the plant's origin, with species from warmer climates generally exhibiting higher frostfølsomhet.

Factors influencing frostfølsomhet include the plant's cellular structure, the presence of antifreeze proteins, and the speed at which temperatures drop. Young plants, tender growth, and flowering or fruiting stages can also increase a plant's vulnerability to frost. Gardeners and horticulturists use the term frostfølsom to guide planting decisions, determining where and when to introduce certain species into their local environment. Plants are often described with varying degrees of frostfølsomhet, from very sensitive to moderately sensitive. Understanding this characteristic is crucial for successful cultivation and for preventing crop loss due to unexpected cold snaps. For instance, a plant labeled "svært frostfølsom" would require protection or should only be planted after the last expected frost in a region. Conversely, a "lite frostfølsom" plant might tolerate some early or late frosts.