It’s a way of protecting the trees, and making sure they survive the winter and beyond ... so they don’t need all of them to fall off and regrow in time for summer. Some do fall off ...

A tree begins its preparations in late summer as day length shortens to survive winter temperatures. Cold acclimation occurs gradually and fall color is a sign that the process is in place and ...

Regardless of whether you grow a Japanese maple (Acer palmatum) with an upright or weeping habit, its colorful fall foliage ... the late winter or early spring months, during the tree’s dormancy ...

They start to appear in fall ... view all winter through much of spring. They're at least 20 feet up and one or two feet wide. Sometimes, several bundles are scattered in the same tree.