box tree burl

navigate by keyword : and appear are beneath bulbous burl burls can causes certain common condition connected fungus great ground groups grow infestation injury insect malignancy mold most protrusions results roots size some sometimes species stress the this tree types undergoing underground virus

Burl from Box Tree Royalty Free Stock Photo

Box Elder Tree Burl Wood Northern Utah Royalty Free Stock Photo

Pine wood wall background with vignetting in grunge style Royalty Free Stock Photo

A burl results from a tree undergoing some form of stress. It may be caused by an injury, virus or fungus. Most burls grow beneath the ground, attached to the roots as a type of malignancy that is generally not discovered until the tree dies or falls over. Such burls sometimes appear as groups of bulbous protrusions connected by a system of rope-like roots. Almost all burl wood is covered by bark, even if it is underground. Insect infestation and certain types of mold infestation are the most common causes of this condition. In some tree species, burls can grow to great size.