Jump to navigation Jump to search Evergreen article is about plant types. A silver fir shoot showing three successive years of retained leaves. In botany, an evergreen is a plant that has leaves throughout the year that are always green.
Evergreen trees do lose leaves, but each tree loses its leaves gradually and not all at once. Most tropical rainforest plants are considered to be evergreens, replacing their leaves gradually throughout the year as the leaves age and fall, whereas species growing in seasonally arid climates may be either evergreen or deciduous. In areas where there is a reason for being deciduous, e. Deciduous trees lose nutrients whenever they lose their leaves. In warmer areas, species such as some pines and cypresses grow on poor soils and disturbed ground. These conditions favour the growth of more evergreens and make it more difficult for deciduous plants to persist.