because its cold and they freese and fall off
Orchid tree usually sheds its leaves in winter though some species do not.
evergreen tree leaves
Evergreen trees keep their leaves/needles over the winter months. Deciduous trees lose their leaves during the winter months.
Deciduous Tree.
Dormant.
My grandparents have an apple tree and no they do not have leaves in the winter.
The tree is virtually hibernating and drops its leaves so that it may avoid freezing of free water in the leaves during winter season.
Trees that don't loose its leaves in winter would be a Evergreen, or Coniferous.
A tree that drops it's leaves in autumn is a deciduous tree.
The leaves can not survive the cold. They would freeze. The trees become dormant and can survive the winter.
The only part of a healthy tree that dies in winter are the leaves and this is because the tree does not need to take in solar energy as it does not grow in winter.
is the oak tree keep color in winter