Did you recently notice a large, bulky knob or lump on the trunk of one of your trees? Chances are, it’s a burl. Typically, they’re harmless, but you might still be interested to learn what causes burls on trees.
At SoutheastTree, concerned tree owners call us about burls and bark abnormalities all the time. Here, we share details about what tree burls are, what causes them, and the best way to prevent them. We’re a proud leader in tree care for North Metro Atlanta, so get in touch if you’re looking for the best tree services in East Cobb, GA.
What’s a Tree Burl or Burl Wood?
You might describe a tree or wood burl as a rounded swelling. The burl indicates an interruption in the tree’s growth and forms on the plant’s exterior, which is why you see it clearly. Sizes vary, and the shapes are irregular.
Ash, walnut, cherry, oak, and maple trees often have burls, but any species could develop them. Since burls form below ground level at the roots, people only tend to notice the ones that are on the trunk above ground.
Because these round structures can expand as the tree grows, property owners often fear that their trees are dying or diseased. Fortunately, burls are harmless.
These growths don’t require any type of tree health intervention, and removal is unnecessary. In fact, cutting burl wood off is a terrible idea. Doing so might create a smoother surface, but removing these wound-healing tissues only leaves the plant vulnerable to insects or disease.
Common Causes of Burl Wood
What causes burls on trees? People sometimes assume burls are genetic mutations. Arborists tend to cite them as a tree stress response.
For example, external stressors like storm damage, pest infestations, and fungal infections can disrupt or influence the tree’s growth hormones. This prompts abnormal cell growth, causing large, woody growths around the tree’s trunk or base.
Why Is Burl Wood Popular?
Not everyone likes the look of burls, but there is a market for this wood’s unique appearance. The deformity changes the wood grain, giving it a pattern that’s as unique as human fingerprints. Items like flooring, furniture veneers, and wall panels consisting of burl wood are one-of-a-kind, so they are a core element in creating visual interest.
Can You Prevent Burls?
You know what causes burls on trees, but you might wonder if they’re preventable. Up until now, there are known ways to prevent burls from forming on trees. Bark abnormalities are a natural consequence of infection, infestations, drought, and other factors beyond human control.
However, since stress is the problem, routine tree care services may be helpful. Don’t like how the burl looks? Arborists can assess a plant’s health and determine the right way to maintain or improve it, including safely removing burls if that’s something you really want.
Tree professionals like SoutheastTree know that trees respond to stressors. They can provide expert guidance on minimizing your plants’ exposure to possible triggers that could potentially create burls.
Keep Your Trees Healthy and Visually Appealing With Help From SoutheastTree
What causes burls on trees? Stress could result from environmental injuries, insect infestations, and tree diseases.
Removing these abnormalities is generally inadvisable, but our experts at SoutheastTree can help you maintain your plants’ health to minimize exposure to certain stressors. We have a deep understanding of tree surgery, removal, pruning, and plant health.
Contact SoutheastTree at (770) 977-8733 to request a free estimate! As a fully licensed and insured tree company serving East Cobb, Georgia, we can offer you a free tree risk assessment, top-tier services, and 24/7 emergency solutions.