Don’t Ignore these General Warning Signs of Tree Disease
The Tree Guy • September 19, 2025
When trees become diseased, it can weaken them and create safety risks. While different diseases affect trees in different ways, there are some general warning signs that often signal a problem. Recognizing these symptoms early gives you the best chance to save the tree or determine whether removal is necessary. At The Tree Guy, our local arborists are experts at identifying diseased trees and then determining the best course of action. Here are four general signs that a tree may be suffering from disease.
Unusual Leaf Discoloration
Leaves are often the first part of a tree to show signs of trouble. If you notice leaves turning colors outside of their normal seasonal cycle, such as yellowing or browning during spring or summer, it may be a warning sign of disease. Discoloration can indicate that the tree’s vascular system is under stress, preventing proper nutrient flow.
Thinning Canopy
A full, lush canopy is a good sign of health. When a tree begins to lose leaves prematurely or produces noticeably fewer leaves than in previous years, it could be struggling. Thinning foliage often reflects an internal issue that prevents the tree from supporting normal growth. If the canopy looks sparse compared to nearby trees of the same type, it’s worth taking a closer look.
Cracked/Peeling Bark
The bark acts as a protective barrier for a tree. When it begins to crack, peel, or develop sunken areas, the tree may be battling disease beneath the surface. Damaged bark can make the tree more vulnerable to further stress, and it may indicate that the underlying tissues are weakening.
Dead/Dying Branches
Isolated branches that die off while the rest of the tree seems healthy are often a red flag. When multiple branches begin to wither, it’s a strong indication that the tree’s overall health is compromised. Dead branches not only point to disease but also create safety risks, as they can break and fall unexpectedly.
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When strong winds blow through, healthy trees usually bend and sway without issue. But if a tree is weakened or unstable, those same gusts can push it past the point of recovery, leading to dangerous falls. A toppled tree can damage property, block roads, or cause injury—so identifying risks before a storm hits is crucial. Some warning signs of instability can be subtle, while others are more obvious. Recognizing them early allows you to take preventive action and call an arborist before disaster strikes. At The Tree Guy, our local arborists can identify hazardous trees and remove them as needed. Here are four warning signs that a tree may be at heightened risk of toppling in high winds. Significantly Leaning A noticeable lean—especially if it has recently developed—is one of the clearest signs of instability. While some trees grow naturally at an angle, a sudden shift or worsening tilt may indicate that the root system has been compromised. This can happen due to root rot, soil erosion, or ground saturation after heavy rain. Leaning trees are far more likely to be uprooted during strong winds. Root Problems/Soil Movement The root system anchors the tree and provides critical stability. When roots are damaged, diseased, or decayed, the entire tree becomes vulnerable. Fungus growing at the base, cracked or lifting soil, or visibly exposed roots can all indicate underlying issues. Soil that appears raised on one side of the trunk is a serious sign that the tree is shifting and could soon fall. Cracks or Cavities in the Trunk A tree’s trunk must bear the weight of its canopy and resist wind forces. Deep cracks, hollow areas, or cavities weaken the trunk and increase the likelihood of breakage under stress. Decay around these areas signals structural compromise. If a large section of the trunk is damaged, the tree may no longer be able to support itself during a storm. Close Proximity to Recent Construction Trees near recent excavation, grading, or trenching are at higher risk because their roots may have been disturbed. Damaged roots can lose their grip on the soil, making trees more prone to falling in windy conditions. Tree Removal in Ventura, CA When you need tree removal in Ventura, CA and the surrounding area, contact The Tree Guy at 805-559-1515 . Feel free to give us a call to request an arborist estimate in greater Ventura, CA!
A dead tree isn’t just an eyesore—it can become a serious safety hazard. When trees die, their structural integrity weakens, making them prone to falling, especially during storms or high winds. Falling limbs or entire trees can cause significant property damage or injury. That’s why it’s essential to recognize the signs of a dead tree early and consult with a professional arborist to determine if removal is necessary. At The Tree Guy, our local arborists are experts at identifying and safely removing dead trees. Here are four signs that a tree is dead and should be taken down by an expert. No Leaf Growth One of the most obvious indications that a tree is dead is the absence of leaves during the growing season. If a tree remains bare while neighboring trees are full of leaves, it may be dead or dying. This is especially telling in deciduous trees that should leaf out in spring. Dead trees will not produce new growth, and their branches will stay barren even when environmental conditions are favorable. Brittle or Crumbling Bark The bark of a healthy tree should be relatively firm and intact. If the bark is peeling excessively, flaking off, or crumbling when touched, this can point to a serious health problem. In many cases, dead trees will have large sections of missing bark or deep cracks in the trunk. These signs reflect internal decay. Branches Snap Easily When you break off a branch from a living tree, you’ll usually find it’s somewhat flexible and green on the inside. In contrast, branches from a dead tree will snap easily, feel dry, and appear brown or gray throughout. If multiple branches across different parts of the tree show this level of brittleness, it’s a strong indicator that the tree is beyond saving. Fungus Growth on the Trunk or Roots Fungal growth at the base of a tree or along its trunk can be a symptom of internal rot. When a tree begins to decay from the inside, fungi often take hold in the weakened wood. While not every fungal presence means a tree is dead, it’s often a sign of significant internal damage. An arborist can evaluate the severity and determine if the tree poses a safety risk. Tree Removal in Ventura, CA For expert tree removal in Ventura and the surrounding area, contact The Tree Guy at (805) 254-6682 . Feel free to give us a call to ask for an arborist estimate in Ventura, CA!
At The Tree Guy, we aim to exceed our customers’ expectations by doing top-notch tree work at fair rates. Whether you need big trees to be safely removed or if you need a stump to be eliminated from your yard, our team of local arborists will work diligently to complete the job to the highest standards. And we appreciate it when our customers offer feedback about their experiences with us. Here’s a look at some of our recent customer reviews. “Working with John and his crew from the tree guy has been a wonderful experience. They are dependable, reasonably priced, safety conscious, and respectful of me and my property. They got the job done quickly, safely, and efficiently. I can't say enough positive things about John and his crew. I have a tricky tree due to proximity to power lines. And they handled it like the pros. Don't scroll any farther call John today.” — Tammy G. “Responsive, timely, a fair price, and excellent work. Jonathan and his team are highly recommended!” — Dennis W. “Look no further, Jonathan knows his stuff. He helped me with caring for my palm trees and educated me on their anatomy, good and bad signs, how to take care of them, and he was excited about it the whole time. You can tell he loves his job and he will always be my first call when I need the job done right.” — Gary S. “John was amazing from the beginning to end. Made sure to explain what work should be done on our trees and gave us the best and fairest price for the service. His crew was very attentive to details and made sure to get the work done exactly as we wanted without damaging any off the trees. We had 6 palm trees done and another tree trimming. They cleaned up everything afterwards. Would definitely recommend them.” — Luiz K. “Thorough knowledge and understanding of trees and their needs. Intelligent accommodation of our wishes. Thorough job well done with great clean up and after care. Thank you! I highly recommend The Tree Guy!” — Daniel L. Tree Services in Ventura, CA When you need an arborist in Ventura and the surrounding area, contact The Tree Guy at (805) 254-6682 . Feel free to give us a call to arrange an arborist estimate in Ventura, CA!
Tree stumps may seem harmless enough after a tree has been removed, but leaving them in your yard can lead to a variety of problems. From safety concerns to diminished curb appeal, old stumps can sully your outdoor space. Fortunately, stump removal is a straightforward solution that offers several lasting benefits. At The Tree Guy , we specialize in stump grinding and removal in the greater Ventura, CA area. Here are four ways that getting rid of tree stumps can improve your property. Prevention of Pest Problems As a stump begins to decay, it can attract unwanted pests such as termites and ants. These pests may eventually make their way to your home, causing further damage. Stump removal eliminates a potential breeding ground for insects and helps keep your yard and home free of infestations. Enhanced Curb Appeal A stump left behind in your yard can create an eyesore, especially if it’s in a visible location. Over time, the wood can decay and become discolored, making your landscape look unkempt. Removing the stump helps create a cleaner, more attractive yard that reflects the overall care and pride you take in your property. Whether you're planning to sell your home or simply want to enjoy a more beautiful outdoor space, eliminating stumps contributes to a more polished appearance. Increased Safety Tree stumps can pose a tripping hazard, particularly for children or guests who may not see them in the grass. If you're mowing your lawn or working on landscaping, a stump can also damage your equipment. In some cases, roots may continue to grow and create uneven ground, which adds another layer of risk. Removing the stump creates a safer yard with fewer liability concerns. More Usable Space Even a single stump can take up valuable yard space that could be used for something more enjoyable. Once a stump is removed, you’ll have more room for planting new trees or shrubs, installing a garden, adding outdoor seating, or expanding your lawn. This can make your yard better suited to your desires. Stump Grinding & Removal in Ventura, CA For stump removal in Ventura and the surrounding area, contact The Tree Guy at (805) 254-6682 . Feel free to give us a call to request an arborist estimate in Ventura, CA!
Wood chips are an incredibly versatile and eco-friendly resource that can benefit your property in a variety of ways. Whether you’ve recently had trees removed or trimmed, or you’re simply looking for sustainable landscaping materials, using wood chips effectively can improve your property. At The Tree Guy, we offer brush chipping in Ventura, CA that produces wood chips, which you can then use in various ways in your landscaping. Here are four excellent ways to make the most of wood chips on your property. Mulch for Garden Beds One of the most common and beneficial uses for wood chips is as mulch in garden beds. When spread over soil, wood chips help retain moisture, suppress weeds, and regulate soil temperature. Over time, they also break down and enrich the soil with organic matter. Using wood chips as mulch can also give garden beds a clean, uniform appearance that enhances your landscape design. Pathways and Trails Wood chips can be used to create attractive, soft-surface walkways around your yard or through wooded areas. They provide a natural look that blends well with outdoor settings while helping to prevent mud and erosion. A thick layer of wood chips can provide a comfortable walking surface and is especially useful in areas that get a lot of foot traffic. They also help control weeds along the path and reduce dust in dry conditions. Erosion Control If your property includes slopes or areas that are prone to erosion, wood chips can serve as a natural solution. When applied to vulnerable spots, they act as a barrier that slows water runoff and helps stabilize the soil. As the wood chips decompose, they also improve soil structure and fertility, which can help make the area more resilient to future erosion. Playground Surface Wood chips can make an excellent, shock-absorbing surface for playgrounds and play areas. They provide a cushion that helps reduce the impact from falls, making the area safer for children. Compared to synthetic materials, wood chips are more natural and biodegradable. They can also be replenished easily and are often more cost-effective. Wood Chips in Ventura, CA When you need brush chipping in Ventura and the surrounding area, contact The Tree Guy at (805) 254-6682 . We provide expertise with both residential and commercial tree care in greater Ventura. Feel free to give us a call to request an arborist estimate in Ventura, CA!
Trees are a valuable part of any landscape, offering beauty and environmental benefits. However, there are times when tree removal is necessary for safety, property maintenance, or overall landscape health. Professional tree removal ensures that the job is done safely and efficiently. At The Tree Guy, we provide expert tree removal in the greater Ventura, CA area. Here are four common reasons that trees need to be professionally removed. Structural Instability A tree with significant structural damage poses a serious risk to people and property. Storms and high winds can weaken a tree’s limbs or trunk, making it prone to falling. Cracks, splits, or leaning are signs of instability that should be addressed by a professional arborist. Removing an unstable tree before it collapses can prevent costly damage and injuries. Disease and Pest Infestation Trees that are severely affected by disease or pests often require removal to protect the surrounding landscape. Fungal infections, rot, or infestations by insects like termites or bark beetles can spread quickly, compromising the health of nearby trees. When treatment is no longer effective, professional removal helps prevent the spread of the problem and maintains the overall health of the property. Encroachment on Structures As trees grow, their roots and branches can extend too close to homes, driveways, and utility lines. Overgrown roots can crack foundations, lift sidewalks, and interfere with plumbing, while large branches may pose a hazard to roofs and power lines. If a tree is causing structural damage or creating a safety concern, removal may be the best option to prevent costly repairs and potential accidents. Dead or Dying Trees A tree that is dead or in the advanced stages of decline no longer contributes to the landscape and can become a liability. Dead trees are brittle and more likely to fall unexpectedly, posing a serious hazard to people and property. Removing a dead or dying tree promptly helps maintain the safety and aesthetics of the property while allowing space for new, healthy growth. Tree Removal in Ventura, CA When you need tree removal in Ventura and the surrounding area, contact The Tree Guy at (805) 254-6682 . Feel free to give us a call to ask for an arborist estimate in Ventura, CA!
Trees add beauty and shade to your property, but when they grow too large or become unhealthy, they can pose serious risks to your home. It’s important to be aware of the signs that a big tree may be threatening your property so that you can take action before an accident occurs. At The Tree Guy, our local arborists can identify dangerous trees and remove them as needed. Here are four signs that a large tree may be dangerous to your home. Large Cracks or Holes in the Trunk The trunk of a tree is its central support, and any signs of damage to it should be taken seriously. Large cracks or holes in the trunk can weaken the structural integrity of the tree, making it more likely to fall or break apart in strong winds or storms. If you notice any large visible cracks or significant cavities in the tree’s trunk, it may be an indication that the tree is unhealthy or structurally compromised. In these cases, it’s important to consult with an arborist to assess the risk. Significant Leaning A tree that is leaning in a specific direction can be a significant hazard, especially if it leans toward your home. While many trees do naturally grow at slight angles, a pronounced lean could indicate that the tree’s root system is damaged or that it’s been weakened by disease or weather. If the tree is leaning toward your house or any structures on your property, it’s critical to have it evaluated by a professional. If left unaddressed, a leaning tree could eventually topple, causing major damage to your home. Dead or Dying Branches Dead, dying, or hanging branches are a major sign that a tree may pose a threat to your home. These branches can fall at any time, especially during storms or high winds. Overhanging branches that are too close to the roof, windows, or power lines are particularly concerning, as they could cause physical damage or even create fire hazards if they touch electrical wires. If you notice any large dead branches, it’s important to have them trimmed back or removed. Root Damage or Exposure The roots of a large tree are essential for stability and nourishment. If you notice that the roots are exposed, damaged, or pushing up through the soil, it can indicate that the tree is struggling or unstable. When the roots are compromised, the risk of the tree uprooting increases. If you spot signs of root damage near your home or foundation, it’s a good idea to call an arborist for an evaluation. Tree Removal in Ventura, CA When you need tree removal in Ventura, CA and the surrounding area, contact The Tree Guy at (805) 254-6682 . Feel free to give us a call to request an arborist estimate in Ventura, CA!
Trees are susceptible to various health issues that can weaken them or even lead to their demise. But proper care and preventive maintenance can help trees thrive for decades. At The Tree Guy, we provide tree care in Ventura, CA that will help to keep your trees in strong health. Here are five tips to keep your trees healthy and free from serious problems. Regular Pruning for Strong Growth Pruning is crucial for maintaining a tree’s structure and health. Removing dead, diseased, or weak branches helps prevent the spread of infections and allows the tree to direct its energy toward healthy growth. Proper pruning also improves air circulation, reducing the risk of fungal diseases. However, improper pruning can be harmful, so it’s best to entrust the work to a professional arborist to ensure your tree gets the right care. Provide Adequate Watering Water is essential for tree health, but improper watering can lead to problems. Young trees need consistent watering to establish strong root systems, while mature trees often rely on natural rainfall. However, during droughts, even well-established trees need supplemental watering. Deep watering encourages deep root growth, making trees more resilient. Avoid overwatering, as excessive moisture can lead to root rot and fungal infections. Monitor for Pests and Diseases Many tree health issues stem from pest infestations and diseases. Regularly inspecting your trees for unusual leaf discoloration, holes in the bark, or oozing sap can help you catch problems early. If you notice signs of infestation or disease, treating the issue promptly can often prevent long-term damage. Proper Soil Health Healthy soil is the foundation of a strong tree. Trees absorb nutrients from the soil, so poor soil conditions can lead to stunted growth and increased vulnerability to disease. Regularly testing your soil for nutrient levels and pH balance, and amending it accordingly, helps ensure that it provides the necessary support. Protect Trees from Mechanical Damage Physical damage from lawnmowers, construction, or vehicles can create open wounds that invite disease and pests. Avoid compacting the soil around tree roots by limiting the use of machinery in the area, as compacted soil can restrict root growth. Tree Care in Ventura, CA When you need an arborist in Ventura and the surrounding area, contact The Tree Guy at (805) 254-6682 . Feel free to give us a call to ask for an arborist estimate in Ventura, CA!
Healthy trees are vital to our environment, offering shade, beauty, and cleaner air. But when a tree starts to die, it can become a serious safety risk. Recognizing the signs early is crucial for preventing hazards such as falling branches or tree collapse. At The Tree Guy, our local arborists can identify dying trees and then safely remove them as necessary. Here are five indications that a tree may be dying. Decaying Bark Healthy bark is firm, with a consistent texture and color. When a tree starts dying, its bark may become loose, cracked, or fall off in large chunks. You might also notice cankers or areas where the bark is sunken or missing. Fungi growing on the bark can also indicate internal decay. Sparse or Discolored Leaves Leaves are one of the clearest indicators of a tree's health. If a tree's leaves are sparse or discolored during the growing season, it may be struggling. Yellow or brown leaves outside of their normal seasonal cycle often point to root damage, poor nutrient absorption, or disease. Also, if only certain sections of the tree display these symptoms, it could indicate localized damage or infection. Dead or Falling Branches Dead branches are another common sign of a dying tree. When branches fail to produce leaves or fall off easily, it indicates that the tree is redirecting its limited resources to healthier sections. Large numbers of dead branches, especially those falling without strong winds or storms, suggest advanced decay or disease within the tree. Fungal Growth at the Base Fungi are often a symptom of internal rot or decay in trees. If you notice mushroom-like growths at the base of the trunk or along major roots, it's a warning sign that the tree's structural integrity is compromised. These fungal organisms can break down the tree's internal matter, weakening it from the inside out. Leaning or Unstable Structure While some trees naturally grow at an angle, a sudden lean or noticeable shift in the tree's position is a major warning sign. This can indicate root damage or a weakening trunk. Exposed roots further suggest instability. Such trees pose significant risks and may require immediate intervention from the arborist. Tree Removal in Ventura, CA When you need tree removal in Ventura and the surrounding area, contact The Tree Guy at (805) 254-6682 . Feel free to give us a call to ask for an arborist estimate in Ventura, CA!
When big trees are unhealthy or improperly maintained, they can pose serious safety risks. Such trees can be more prone to toppling over in high winds, potentially causing injuries and property damage. At The Tree Guy, our local arborists can identify hazardous trees and remove them as necessary. Here are five signs that your tree is posing a safety risk. Dead or Falling Branches Trees that have dead or dying branches can be a significant hazard. Branches that are brittle and break off can fall unexpectedly, causing injury to people or damage to property. If you notice branches that seem to be decaying or are simply bare, it's important to have them removed. Cracked or Hollow Trunk A tree trunk that shows visible cracks or signs of hollowness is a strong indication that the tree's internal structure is weakening. Cracks in the trunk can be a result of disease, pest infestation, or old age. A hollow trunk suggests that the tree may have rotting wood or a compromised core, making it more likely to break or topple under stress. These trees should be carefully evaluated by an arborist to assess whether removal is necessary. Leaning Trees A tree that is visibly leaning in one direction could be a sign of structural instability. Leaning often occurs when the tree's root system is compromised, such as from soil erosion, root rot, or a past storm. If the lean is extreme or accompanied by cracks in the trunk, this tree may be at risk of falling. Root Damage or Exposure The health of a tree’s roots is critical to its stability. When roots are exposed or visibly damaged, the tree’s ability to anchor itself securely to the ground can become compromised. Common causes of root damage include construction and soil erosion. Fungus Around the Base The presence of fungi, such as mushrooms, around the base of a tree can indicate internal rot or decay. These growths often thrive in decomposing wood, and their appearance can signal that the tree is weakened from the inside. Fungal growth can spread throughout the tree and make it more susceptible to falling or breaking. If you notice mushrooms or other fungal growth near the base of your tree, it’s a good idea to have an arborist assess the tree for any potential dangers. Tree Removal in Ventura, CA When you need tree removal in Ventura and the surrounding area, contact The Tree Guy at (805) 254-6682 . Feel free to give us a call to ask for an arborist estimate in Ventura, CA!
