Compared to deciduous trees that shed their foliage to adapt to the change of seasons, evergreen trees stay green and functional throughout the year. An essential difference between the leaves of deciduous trees and evergreen ones is that the latter have thicker and broader foliage. All of it makes evergreens life savers for the garden during winter. Something is calming and reassuring about their stability – when the other trees change over the year, evergreens are as green as ever!