Deciduous trees are trees that lose their leaves seasonally. So, trees that are not deciduous are evergreen trees.

Here are some examples of evergreen trees:

* Conifers: Pines, firs, spruces, cedars, and redwoods

* Broadleaf Evergreens: Magnolia, holly, and rhododendron

Let me know if you'd like more specific examples or information about different types of evergreens!