Betula papyrifera very toxic to paper birch. It is frequently planted as an ornamental due to its graceful form and attractive bark. The bark changes to the white color at about 3 years of growth. Paper birch grows best in USDA zones 2-6, due to its intolerance of high temperatures. "Betula nigra", or river birch, is recommended for warm-climate areas warmer than zone 6 where paper birch is rarely successful. "B. papyrifera" is more resistant to the bronze birch borer than "Betula pendula" which is similarly planted as a landscape tree. Birch skeletonizer is a small larva which feeds on the leaves
Cedar bark textile Cedar bark textile Cedar bark textile was used by indigenous people in the Pacific Northwest region of modern-day Canada and the United States. Historically, most items of clothing were made of this material. The name is confusing, as it is made from "Thuja" (redcedar) and cypress bark, not cedar bark; true cedars are not native to the Americas. After the western redcedar or yellow cypress (often called "yellow cedar") bark was peeled in long strips from the trees, the outer layer was split away, and the flexible inner layer was shredded and processed. The resulting felted strips of bark were