Woodland Scenics L163 Medium Green Lichen 1.4l One bag of lichen covers approximately 1.77 square feet, depending on how densely it is applied. About Lichen This natural product is a longtime favorite of hobbyists. Its unique texture realistically blends easily with other foliages. Use it to model bushes and ground cover, or use as tree foliage to model quick and economical tree masses. Lichen is available in five solid colors and three mixes. Attach to Tree Armatures with Hob-e-Tac®. Attach to layout with Scenic Glue™. Purchase the Scenery Manual for additional information about how to use the Landscape System.