91直播owners who plant trees know how crucial care is during the formative years of the investment. But what about that front yard guardian that is likely older than the house itself?
Although a mature tree may not demand the same attention as a young Japanese maple, problems still arise. And while a property owner with a green thumb can usually prune young trees from terra firma, mature trees require specialized cutting, pest and disease management that professionals should handle.
It’s worth the extra effort. Environmental studies and real estate experts agree that a mature tree near your home can boost its value by 3% to 15%. “You do not, in fact, need to own the tree to see the financial benefits,” said Geoffrey Donovan, an economist and scientist who consults on the benefits of urban trees. Renters might see reduced cooling costs in summer because of a mature tree’s shade, along with better air quality and reduced traffic noise, he said.
The Arbor Day Foundation offers a calculator where homeowners can enter their ZIP code, species and trunk diameter to estimate a tree’s annual value, including environmental benefits like energy savings and improved air quality, as well as how it enhances property values.
From pruning winter damage to treating powdery mildew 50 feet up, here are some things to look out for to ensure mature trees stay healthy, and what it will cost to get them fixed.
Structural damage
Lauren Marshall, an arborist and director of landscape restoration at the Arbor Day Foundation, recommends evaluating trees three times a year: when they leaf out in spring — or, for evergreens, when new shoots appear; after leaves drop in the fall; and following major storms to check for damaged limbs.
This time of year, especially after winter storms laden with snow and ice, cracked or severed limbs are easier for homeowners to spot. They’re also cheaper to treat. In tree work, access is everything: The closer an arborist can position a bucket truck to the trunk, the lower the cost. Once climbing gear like spikes and ropes come into play, the quote gets more expensive. “Winter is a great time to have a tree pruned because most companies are slow,” said John Wickes, a third-generation arborist, with Davey Tree Expert Co., “and on deciduous trees, there are no leaves, so access is easier and that’s less volume to clean up.”
Limb removal costs vary based on several factors, including crown spread, trunk diameter and risk, with jobs starting around $150 for small branches and $500 for larger ones. Felling a tree typically starts around $1,000. Cabling a tree — using steel or high-strength rope to support competing leaders at risk of breaking — is a specialized skill that can cost several thousand dollars on large trees. Not all arborists offer it, so it’s worth hiring one with experience.
Cosmetic pruning
Pruning to improve a tree’s symmetry or airflow is where arboriculture’s science meets art. Trimming a healthy tree can help address issues like competing leaders, where the trunk takes on a V-shape with weaker sections more prone to splitting; susceptible wounds that come from branches rubbing against one another; or the delicate task of managing limbs that extend over a neighbor’s property line. This kind of pruning can start at $300 to $1,500, depending on the complexity.
“Talking to neighbors is the job and sometimes the bane of our existence in this field because no tree respects property lines,” said Leo Katz, a Portland, Oregon-based arborist and district manager with Davey. “The first question I always ask is what their relationship is with the neighbor, hoping that it’s good.”
Laws across the country generally allow homeowners to cut back any portion of a tree that encroaches on their property without asking for permission, but most arborists prefer to prune branches back to the trunk, or a major limb, to avoid leaving stubs, which is healthier for the tree and better looking. An arborist will also appreciate it if you talk with your neighbor first and have them grant access to the tree from their property. “You’d be surprised how many people try and stick us between their neighbor disputes.”
Root issues
The roots of a mature tree can lift nearby pavement, like a driveway, patio or walkway. An arborist can advise which roots can safely be cut. Katz avoids major surgery within a radius three times the trunk’s diameter, a standard called the critical root zone. “Small roots can be dealt with; large roots cannot and sometimes require removal if the client values the sidewalk more,” Katz said.
Tree roots can also disrupt a home’s sewer line, which they seek out to find moisture. Expect the job of protecting the sewer line to start at about $1,500.
If you have a well-loved mature tree, it’s also wise to have a professional weigh in before any construction nearby. Depending on the species, a tree’s roots can extend up to three times the radius of the drip line — the imaginary line at the edge of the tree canopy — with many important roots in the top 18 inches of soil, which means they can be disturbed by a new patio, pool or addition.
If you notice a tree’s health begins to decline after a patio or home addition (dieback in the foliage is one marker), construction equipment may have damaged vulnerable roots. “Unfortunately, if there is significant damage done to the roots during construction, there isn’t much of an option other than removing the tree,” Katz said.
Pests and disease
91直播owners can usually spot a broken limb, but pests like the emerald ash borer or Asian longhorn beetle, and the traces they leave behind, are harder to identify. Most of the work arborists do beyond pruning falls under plant health care, which includes pest management. The emerald ash borer has killed millions of trees nationwide, and if about 30% of your tree’s branches are dead from infestation — the signs of which might include small D-shaped holes in the trunk, serpentine tunnels beneath the bark or a sudden interest from woodpeckers — it may be time to fell it, said Brian Feldman, an arborist and senior director of technical operations for TruGreen. “Proactively, if you know you have an ash tree, there’s a way to treat it for a few hundred dollars with injections that protect the tree internally,” he said.
91直播owners can sometimes send photos or samples of leaves or bark to a Cooperative Extension plant pathologist to help diagnose a pest or disease, but the treatment — whether synthetic or organic — is usually beyond what they can apply themselves. Sprays, injections and granular treatments take time, and municipalities often have safety regulations that dictate how these chemicals can be applied. Having an arborist visit to diagnose a problem can cost up to $200, with treatments starting around $150, depending on the size and number of trees. Some arborists will waive the consultation fee if you agree to have them work on the tree. For tricky cases requiring lab analysis, diagnostics can add about $300 to the bill.
This article originally appeared in .
漏 2026 The New York Times Company
