What is meant by "plant hardiness"?

"Plant hardiness" specifically refers to the ability of a plant to withstand environmental stressors, particularly low temperatures. This concept is essential in horticulture and agriculture, as it determines the range of climatic conditions in which a plant can survive and thrive.

The hardiness of a plant is typically expressed through a classification system, such as the USDA Plant Hardiness Zone Map, which categorizes plants based on their tolerance to winter temperatures. A plant with high hardiness is able to endure colder climates, making it suitable for planting in regions that experience significant temperature fluctuations.

Understanding plant hardiness is crucial for landscape professionals as it informs appropriate plant selection for particular climates, ensuring that chosen species can survive seasonal variations and remain healthy over time. This aspect emphasizes both the climatic adaptability and survival capabilities of plants in various environmental conditions.