Juniper Burl Round Slab 36”Extremely rare, gorgeous 36 burl round that came from the great state of Arizona! You will never see a juniper tree of this size. Its is from an old growth Juniper tree. Thickness is 2. 5. Juniper burl refers to the highly prized and unique growth pattern found on the trunk of juniper trees. A burl is an abnormal growth that occurs due to a variety of factors, including injury, disease, or genetic mutation. In the case of juniper burls, they are