Tree Service Knowledge Base
Redwood Bark Beetle: What Bay Area Homeowners Should Watch For
The tallest trees on Earth often host a beetle about the size of a grain of rice within their bark. Known as the redwood bark
October 23, 2026
Giving your trees the care and support they need isn’t always straightforward. Trees are complex, living organisms that react to their environment in all kinds of ways. One day, they might look full and healthy, and the next, you could notice discolored leaves or mushrooms appearing around the base. That’s why it’s so important to have someone you can trust for guidance — a tree-care expert who can help you understand what your trees need, identify pests and diseases, and recognize when a tree has become hazardous. Fortunately, that’s not hard to find in Scotts Valley, CA: Simply contact Adney Tree Service to schedule an assessment or evaluation by an ISA-certified arborist.
Our shop sits at 335 Spreckels Drive in Aptos, and Scotts Valley is about thirteen miles north, roughly a twenty to twenty-five minute drive up Highway 17. Our team is led by an ISA-certified arborist, and we're up in Scotts Valley often enough that getting an expert eye on your trees is easy. We'll assess the property, explain what we find, and take care of any follow-up work ourselves.
Scotts Valley is the one town we serve that sits fully up in the Santa Cruz Mountains, ringed by coast redwood forest, and that setting defines every assessment. Homes here were built onto wooded lots with big redwoods and Douglas firs left standing, so evaluating a tree means judging a very large specimen on steep, forested ground with a house often close by.
The mountain environment adds wrinkles a certified arborist watches for. Warmer, drier summers at this elevation stress the forest and invite bark beetles, while parts of town sit on the rare, sandy Santa Cruz Sandhills, where footing differs from the surrounding slopes. Knowing how local redwoods, firs, and oaks respond to all of that is central to reading a tree correctly here.
Drought stress complicates the read further. A redwood or fir weakened by a run of dry summers can look green from the driveway while quietly losing vigor inside, and up here that decline often shows first as beetle activity or thinning high in the crown. Spotting it early takes a trained eye that knows what these trees look like when they're starting to struggle.
The usual reason is a tree that's become a worry, and up here the stakes are high, since a large redwood or fir failing on a slope can reach a house, a road, or a neighbor below. An assessment weighs that risk honestly, which is especially worthwhile before winter storms and before fire season. It's also the right step for a tree that looks unwell, when early diagnosis can still make a difference.
Other reasons are practical. Buyers and sellers of forested lots benefit from a clear report on the trees, removals in the county generally require a permit supported by an arborist, and building on a wooded mountain parcel calls for a plan to protect the trees worth saving. A certified opinion gives each of those a firm foundation.
Storms and fire season both drive assessments up here. After a hard mountain storm, owners want damaged trees checked and documented for insurance, and heading into the dry months many want to know which dead or declining trees near the house should be dealt with first. A certified read sets those priorities clearly.
Living among big trees is the appeal of Scotts Valley, and an assessment is how you enjoy that with confidence instead of uncertainty. Problems in the canopy or the roots usually develop out of sight, so an expert look gives you the earliest possible warning. You also come away with practical direction, since an arborist can recommend the watering, mulching, or thinning that helps a forested lot stay healthy, which matters more at this elevation than it does down on the milder coast. We're up the hill regularly, we know the forest lots and the way these trees fail, and we put our name behind every evaluation in a close community where reputation carries.
Becoming an ISA-certified arborist takes extensive experience, training, and hands-on skill — a credential Adney Tree Service owner Kyle Adney is proud to hold. As a certified arborist, Kyle applies that expertise every day, leading a skilled team of tree-care professionals and giving homeowners and property managers throughout the Central Coast the expert guidance they depend on.
Adney Tree Service is proud to offer a complete range of arborist services for homeowners and property managers throughout the Central Coast. Here are some of the most common ways we help our clients:
There are a number of benefits you and your trees will enjoy when you solicit the assistance of a certified arborist. A few of the most noteworthy advantages of working with the Adney Tree Service team include:
Having an ISA-certified arborist inspect your trees regularly gives you a much clearer picture of any safety risks they may be creating, allowing you to step in before those issues become real hazards. And it’s not just the obvious problems, like large dead limbs. An arborist can identify the subtle warning signs homeowners and property managers often miss — including hidden root problems.
One of the most important parts of treating trees for pests or disease is catching the issue early, since that gives you the best chance of beginning treatment before it gets worse. Early symptoms are easy for homeowners and property managers to miss, but certified arborists are trained to notice subtle changes — often identifying problems at a stage when treatment is much more effective.
Unfortunately, trees sometimes develop issues that make removal necessary. And because many areas throughout the Central Coast require permits for tree removal, the process can become complicated quickly. Working with an ISA-certified arborist simplifies everything — you’ll receive the clear, detailed report needed to obtain a removal permit without the hassle.
Because of their advanced training and education, arborists can often help you avoid removals that non-certified “tree guys” might insist are necessary. For example, a typical tree worker might recommend removing a tree with co-dominant stems, while a certified arborist may be able to stabilize that same tree with cabling — eliminating the need for removal altogether.
Unfortunately, trees sometimes develop problems that require removal. And because many areas across the Central Coast require permits for tree removal, the process can become complicated quickly. Partnering with an ISA-certified arborist makes things much simpler — you’ll receive the clear, detailed report you need to secure a removal permit without the headache.
Along with improving tree health and safety, arborists can also help keep your trees looking their best. Whether they recommend pest-control treatments to stop branch dieback or provide pruning that makes the crown look fuller and more vibrant, certified arborists have a wide range of tools and techniques to enhance your trees’ overall appearance.
It’s always wise to contact an arborist for an assessment or evaluation at the first sign of trouble. And that includes anytime you notice the following clues that something may be wrong:
Crown dieback refers to the slow decline and death of branches within a tree’s canopy. It may start with a single branch showing a few dying leaves or spread across larger sections of the crown. In either case, it’s important to have an ISA-certified arborist inspect the tree promptly to give it the best chance of recovering.
Mushrooms, conks, or any other signs of fungal growth are always a red flag and should be checked by an arborist as soon as possible. These fungi indicate that decay is happening inside the tree, which can weaken it and increase the risk of failure.
Large cavities can develop for many reasons — from old wounds to wildlife activity. Not every cavity poses a serious threat, but because they’re often associated with internal decay, a certified arborist should always evaluate them so you can determine whether removal is necessary.
Cracks in a tree’s trunk or primary limbs are serious hazards, as they indicate the tree (or some portion of the tree) is already actively failing. Not all cracks will require that a tree be removed, but you’ll need an arborist to assess the extent of the crack, consider potential mitigation options, and recommend a course of action.
Missing bark is a potentially serious warning sign — and often a much bigger issue than homeowners or property managers realize. Exposed wood leaves a tree vulnerable to pests, disease, and decay, and it can also indicate deeper underlying health problems that need to be addressed.
Anytime the soil around a tree begins showing troubling signs, such as heaving or cracking, it’s imperative that you have an ISA-certified arborist examine it immediately. These kinds of problems often indicate that the soil, root system, or both are already failing and presenting a serious safety risk.
Poor growth may not look serious at first, but it’s often an early sign that a tree’s overall health is declining. Addressing these issues promptly gives the tree its best chance to bounce back — and it can save you from facing larger, more expensive problems down the line.
Foliar discoloration is always something to take seriously. Not every leaf issue poses a long-term threat to a tree, but some can be significant and require prompt treatment. No matter the cause, it’s best to have an ISA-certified arborist examine any tree with discolored leaves as soon as possible.
Many tree species shed their leaves each year, and the leaves of some will change color before falling to the ground below. But while seasonal leaf drop is normal and fall color is often a welcome sight during the autumn, both issues can be a sign of trouble if they happen during the spring or summer.
You and your trees deserve the highest level of arborist care and guidance — and that’s the standard the team at Adney Tree Service works to meet every single day. While choosing the right arborist in the Central Coast region can feel overwhelming, we believe the traits below clearly set us apart:
Every tree, property, and client is different, so no two arborist evaluations follow the exact same path. Each one brings its own set of challenges and calls for a tailored approach. Still, over the past 10 years, we’ve refined a dependable process that helps us deliver consistent, high-quality service:
Contact us today to get the arborist support you need!
One of the toughest parts of tree care is that pests and diseases often stay hidden for quite a while. By the time you notice discolored leaves or mushrooms around the base, the issue may have already been progressing for weeks, months, or even years. At that point, treatment becomes far more challenging — which is why early detection is so important.
Adney Tree Service’s arborist evaluations and assessments help you identify these tree-health problems early, giving your trees the best chance at a full recovery.
Our team is led by an ISA-certified arborist, giving us the training, skill, and expertise needed to deliver true artisan-level tree-care services.
We have a thorough understanding of California’s native tree species, as well as the ornamental and exotic varieties commonly planted throughout the Central Coast.
We have a proven track record that spans more than a decade, supported by a long list of positive reviews and ratings from past clients.
We’re a full-service tree care team that provides everything you need in one place, so you don’t have to coordinate with multiple tree-care companies.
We’re licensed by the state of California and fully insured, giving you confidence that you’re working with true professionals and that you’re fully protected.
We have been proudly providing arborist services for homeowners and commercial property managers in the Central Coast region since 2015. And whether you’re in Soquel, Scotts Valley, or anywhere in between, we make it easy to get the arborist help you need.
Have lingering questions about arborist assessments and evaluations? Curious to learn more about the ways Adney Tree Service can help you better care for your trees? We’ve gathered some of the most common questions we hear from our clients and answered them below.
The tallest trees on Earth often host a beetle about the size of a grain of rice within their bark. Known as the redwood bark
A tree can be gone for years while the fungus that killed it is still alive underground. Armillaria is a great example. This potentially lethal
Invasive shothole borers are no longer just a Southern California problem. In September 2025, officials confirmed the beetles in two trees in the Tannery area
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