Simply put, plant hardiness is a plant’s ability to survive adverse growing climates such as drought, flooding, heat, and cold. The science behind plant hardiness can be complicated. Plant genetics determine the ability of a plant to stand cold temperatures without damage. Each plant cultivated must have different hardiness levels based on their adaptation and genetics.
Even different parts of a plant may be hardy in different ways For example, the cold may cause your beauty perennials to die back. However, the roots are hardy enough to bring new growth in the spring.
This was you a brief example of some aspects you should consider about climate if you want to be a fine gardener. Contact us if you want more specialized advisory.