Q: What is plant hardiness?
A: Plant hardiness refers to the minimum temperature a plant can withstand for a short period during the cold season while remaining healthy and viable. It provides only a general guideline and can vary significantly between different varieties of the same species. Additionally, the listed hardiness ratings typically apply to mature plants; younger, less established plants requires extra protection from cold.
Another crucial factor in plant survival is the microclimate of the specific area where the plant is located. Microclimates offer more favorable conditions, such as shelter from wind or enhanced warmth, potentially enabling a plant to thrive outside its usual hardiness range.