Frostempfindlicher

Frostempfindlicher is a German term used to describe something that is sensitive to frost. In botany, horticulture, and agriculture it is applied to plants or plant parts that suffer damage at freezing or near-freezing temperatures. The concept also extends to materials or organisms that are adversely affected by frost, but it is most commonly used in relation to crops and ornamental plants.

Linguistically, frostempfindlich is an adjective formed from frost and empfindlich (sensitive). It is used to describe frost susceptibility, for example frostempfindliche Pflanzen (frost-sensitive plants) or frostempfindliche Sorten. The noun form frostempfindlichkeit (frost sensitivity) refers to the trait or condition itself.

Mechanisms and symptoms of frost sensitivity involve damage from freezing temperatures. Ice crystal formation can disrupt cell structure and cause dehydration, leading to tissue necrosis, blackened or sunken areas, and stunted growth. Some plants recover from light frosts, while others incur irreversible injury even at modest below-freezing temperatures. Environmental factors such as humidity, wind, and rapid temperature fluctuations can intensify frost damage.

Management and mitigation focus on reducing exposure to frost and selecting appropriate cultivars. Protective measures include using frost cloths or row covers, covering plants during dawn-to-dusk cold spells, mulching, and employing windbreaks. In permanent facilities like greenhouses, temperature control, vent management, and supplemental heating help prevent frost injury. Breeding and selection emphasize frost tolerance and hardiness to expand cultivation into cooler regions or longer growing seasons.

Common frost-sensitive crops include tomatoes, peppers, cucumbers, strawberries, citrus varieties in temperate zones, and many tropical or subtropical ornamentals.