Deciduous Trees Are those that loose leaves in their dormant season. They also have an unusual meaning "falling off at maturity" or "going to fall off", and it is typically referring to as trees, shrubs or bushes that lose their leaves seasonally, in late fall when the temperatures are cool. They shed their leaves for winter and then return in early spring. These beautiful trees come in a wide variety of sizes and shapes and are beautiful. Some even offer beautiful blooms to enjoy during the spring and summer months, and other attract small wildlife such as birds and squirrels to an area.