A flocked Christmas tree is a tree that has been covered in artificial snow or flocking, which is a fine powder made of plastic or fiberglass. Flocking can give a tree a more realistic or whimsical look, depending on the type of flocking used. Some flocked trees are made of real pine, while others are made of artificial materials. Flocked trees are often popular for their snowy appearance, and they can be a great option for those who want a unique or eye-catching tree.