trimming live oaks Texas

Everything You Should Know About Trimming and Pruning Live Oaks in Texas

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Texas Oak Trees are beautiful, but they can be a lot of work. When healthy they’re long-lived, but they are also vulnerable to oak wilt, structural problems, and stress when pruning is done at the wrong time or in the wrong way. In Central Texas, the Hill Country, and the Austin area, improper cuts or mistimed work can mean the difference between a healthy live oak and a rapid decline you did not expect.

Our ISA Certified Arborists routinely prune live oaks across Central Texas and understand how timing, technique, and tree biology fit together. When we talk about pruning live oak trees or planning live oak tree trimming in Texas, we are always thinking about oak wilt prevention, safety, and long-term structure. This guide walks you through when to prune, why timing matters, how to avoid common mistakes, and when to call an expert so you can make informed, confident decisions about your trees.

Trimming and Pruning Live Oaks in Texas

The most important rule for live oak pruning in Texas is simple, but serious. If you remember nothing else, remember timing and wound care.

Trimming and pruning live oaks should take place outside the oak wilt risk window. You want to protect both the tree in front of you and the larger group of live oaks in your neighborhood, because oak wilt spreads quickly once it takes hold. That is why timing is the starting point for any pruning plan, not an afterthought.

What Is the Best Time of Year To Trim Live Oaks in Texas?

The safest guideline is to avoid pruning live oaks in Texas from February through June due to oak wilt risk. During that period, insects that carry oak wilt spores are more active, and fungal mats are more likely to be present. Fresh wounds created by pruning are especially attractive to these beetles, which is why cuts made in that window can become an easy entry point for the disease.

The safer window for pruning live oaks usually runs from July through January. In these months, the chance of beetle transmission is significantly lower. No matter when you prune, you should always paint pruning cuts immediately. If an emergency forces you to prune between February and June, keep cuts as limited as possible and seal them right away. This approach is standard practice in Central Texas, Austin, and the Hill Country, and it is one of the most effective ways to protect live oaks from unnecessary risk.

Why Live Oaks Need Regular Trimming and Pruning

Live oaks are known for their broad, spreading canopies and strong horizontal limbs. Those features are beautiful, but they also create very real maintenance needs. Without occasional structural work, live oaks can become dense, heavy, and prone to problems during storms.

Healthy pruning is not about reshaping your tree every year. It is about checking in on how the canopy is developing, whether branches are growing into conflict with structures, and whether early structural issues can be corrected before they turn into hazards.

What Are the Benefits of Pruning Live Oak Trees?

Thoughtful pruning supports better airflow through the canopy, which helps leaves dry more quickly after rain and reduces conditions that favor fungal problems. Structural pruning can reduce end weight on long limbs, remove crossing branches that rub and create wounds, and correct poor branch angles before they lead to cracks or splits.

These live oak pruning tips all point to the same outcome. When you reduce unnecessary weight, improve canopy balance, and remove weak or dead limbs, you lower the chance of limb failure in storms and support healthier growth over time. This is especially important in areas where live oaks lean over homes, streets, or play areas, which is common on properties throughout Austin, Round Rock, and the Hill Country.

How Often Should You Trim a Live Oak in Texas?

There is no single schedule that applies to every live oak. Some trees grow more quickly or have more structural issues than others. In general, many live oaks benefit from a structural review and light pruning every few years, rather than heavy work on a frequent basis.

You may need to prune more often if limbs are creeping closer to roofs, blocking driveways, or hanging low over sidewalks. Younger trees sometimes need periodic adjustments to guide good structure, while older trees may need less frequent but more targeted work. The best approach is to let structure, safety, and growth patterns guide the timing, instead of pruning on a strict calendar.

Oak Wilt 101: Why Timing Matters

Oak wilt is the main reason timing is so critical for live oak pruning in Texas. It is a serious disease that can move quickly through live oak stands and cause widespread loss if prevention practices are ignored.

What Is Oak Wilt and Why Is It a Problem for Live Oaks in Texas?

Oak wilt is a fungal disease that blocks water movement inside the tree. Live oaks are particularly sensitive to it, and infection can lead to rapid decline and death. Oak wilt is widespread in Central Texas, affecting live oak stands from Austin to the Hill Country. Once symptoms appear, the disease often progresses faster than most property owners expect, especially in dense groups of live oaks.

Typical early signs include browning along leaf veins, sudden leaf drop, and sections of the canopy that thin out or die back quickly. Because symptoms can resemble other problems, professional evaluation is important for accurate diagnosis.

How Do Pruning Wounds Help Spread Oak Wilt?

Oak wilt spreads in two main ways. First, root graft transmission allows the disease to move from one live oak to another when their roots have grown together. Second, nitidulid beetles can carry fungal spores from infected trees to fresh wounds on healthy trees.

These beetles are attracted to the sap from new cuts and to fungal mats that form on infected red oaks. When they land on a pruning wound, they can introduce oak wilt spores directly into the tree’s vascular system. This is why pruning during high beetle activity and leaving cuts unpainted dramatically increases risk. Following guidance from sources such as the Texas A&M Forest Service and TexasOakWilt.org helps reduce these preventable pathways.

Best Time To Trim and Prune Live Oaks in Texas

Timing decisions for live oak pruning should always be made with oak wilt prevention at the forefront. When you understand the general pruning calendar, you can plan work more confidently and avoid dangerous windows.

What Months Should You Avoid Trimming Live Oaks in Texas?

You should avoid trimming or pruning live oaks from February through June. This period aligns with higher beetle activity and an increased likelihood of fungal mats being present on infected trees. Even routine cuts during this time can create attractive entry points for oak wilt.

When you plan ahead and schedule work outside this window, you significantly lower the chance that pruning will contribute to disease spread.

Does the Best Live Oak Trimming Season Change by Region?

Most of Central Texas, including Austin and Round Rock, follows the same basic oak wilt calendar. Some communities, such as Lakeway and Bee Cave, have adopted seasonal ordinances that limit oak pruning based on oak wilt guidance. You should always check local rules, especially if you live in a city or subdivision with specific oak management requirements.

Emergencies do not always respect the calendar. If a limb fails or becomes hazardous during the February through June period, safety comes first. In those cases, cuts should be limited to what is absolutely necessary and painted immediately. Work should also follow any local rules about emergency oak pruning.

Trimming vs. Pruning Live Oaks: What Is The Difference?

Many people use the words trimming and pruning interchangeably, but for live oaks in Texas, they describe two different levels of work. Understanding the distinction helps you ask for the right service and set realistic expectations for your trees.

What Is the Difference Between Trimming and Pruning a Live Oak?

Trimming usually refers to clearance and appearance. It includes lifting branches away from roofs, driveways, sidewalks, and windows, and keeping canopies tidy along property lines or over paths.

Pruning is more focused on structure and long-term health. Structural pruning addresses how branches are attached, where weight is concentrated, and how the canopy is balanced. It includes deadwood removal, reduction cuts to shorten overextended limbs, and selective thinning to improve canopy balance.

When Does a Live Oak Need Structural Pruning Instead of Just Trimming?

A live oak may need structural pruning when you see crossing branches that rub together, long limbs stretching far beyond the main canopy, or obvious imbalance where one side of the tree carries significantly more weight. These issues are not just cosmetic. They affect how the tree responds to wind, gravity, and future growth.

Both trimming and pruning must still respect oak wilt timing. Even simple clearance work on a live oak requires safe-season planning and proper wound care if you want to protect the tree and nearby oaks.

How To Trim and Prune Live Oaks Correctly

Live oak pruning should always be approached with caution. High branches, large limbs, and complex canopies make this type of work risky without training. It is helpful to understand the principles behind proper pruning so you can evaluate whether a plan sounds reasonable, even if you are not doing the work yourself.

How Do You Prune a Live Oak Without Damaging It?

Proper pruning begins with careful inspection. Every cut should have a purpose, such as removing deadwood, improving structure, or achieving necessary clearance. Cuts should be made just outside the branch collar, the slightly swollen area where a branch meets a larger limb or the trunk. This location allows the tree to seal the wound more effectively.

For larger branches, a 3-cut method helps prevent bark from tearing. This method involves an initial undercut, a second cut further out to remove the limb’s weight, and a final cut at the branch collar to create a clean wound. Tools should be sanitized between major cuts, especially when moving between trees, to reduce the chance of spreading pathogens. Whenever work involves heights, heavy limbs, or potential contact with power lines, you should hire an ISA Certified Arborist rather than attempting the work on your own.

How Much of a Live Oak’s Canopy Can You Safely Remove at Once?

As a general guideline, removing more than about 20 to 25 percent of a live oak’s canopy in a single season is considered excessive. Over-pruning reduces the tree’s ability to produce energy through photosynthesis and increases stress during heat and drought. Instead of making many large cuts at once, a better approach is to plan work over time.

No matter how much is removed, every pruning wound on a live oak should be painted promptly. This is not cosmetic. It is part of oak wilt prevention and is widely recommended in Austin and Central Texas.

Common Live Oak Pruning Mistakes (And How To Avoid Them)

Some pruning errors have long-lasting effects on live oaks. Knowing what to avoid helps you recognize when a proposed plan may not be in your tree’s best interest.

What Pruning Mistakes Can Harm or Kill a Live Oak?

Common harmful practices include:

  • Topping, which removes major portions of the canopy and creates large wounds the tree cannot seal properly.
  • Lion-tailing, which strips interior growth and leaves foliage only at the tips, causing sunscald and increasing the chance of limb failure.
  • Flush cuts, which remove the branch collar and make it easier for decay to spread into the trunk.
  • Leaving long stubs, which dry out and become entry points for insects and fungi because the tree cannot close over them.
  • Over-thinning large portions of the canopy, which reduces the tree’s ability to produce energy and makes it more vulnerable to heat and drought stress.
  • Pruning in spring without an emergency reason, which increases the risk of oak wilt when beetles are most active and attracted to fresh wounds.

Why Is It Dangerous To Prune Live Oaks in Spring in Texas?

Pruning live oaks in spring overlaps with peak oak wilt risk. Spring pruning increases the chance that beetles will visit fresh cuts and bring oak wilt spores with them. Over-thinning during that time also exposes interior branches to sudden sun, which can lead to sunscald and structural weakness.

Flush cuts remove the protective branch collar, making decay more likely to progress into the trunk. Long stubs dry out and never seal properly, also inviting decay. Avoiding these mistakes helps preserve the strength and lifespan of your live oaks.

DIY vs. Hiring a Certified Arborist in Central Texas

It is natural to want to maintain your own trees, but live oaks in Central Texas present unique risks that often call for professional help. Deciding which tasks you can safely handle and which require an arborist is an important part of oak care.

When Should I Call an ISA Certified Arborist for My Live Oaks?

You should call an arborist when your live oaks are large, mature, or located near homes, driveways, or play areas. You should also seek help if you see signs of decline, such as sudden dieback, leaf discoloration, or symptoms that might indicate oak wilt. Trees near utility lines, on slopes, or in tight spaces are best handled by professionals with proper training and equipment.

In the Austin metro, Round Rock, and Hill Country areas, where oak wilt incidence is higher, professional oversight becomes even more important. Arborists with Texas Oak Wilt qualifications and live oak experience can evaluate risks that are difficult to see from ground level.

Is It Safe To Trim a Large Live Oak Tree Myself?

Most large live oak trimming is not a safe DIY task. The combination of heavy limbs, height, and oak wilt considerations makes it easy for well-intentioned efforts to go wrong. DIY work is usually limited to very small, low, non-structural cuts made outside the February through June risk window.

Even then, cuts should be painted and tools cleaned. When you are unsure whether a task is safe to handle, consulting a certified arborist is the best way to avoid injuries and costly mistakes.

Live Oak Care After Pruning: Recovery, Monitoring and Long-Term Planning

Pruning is not the last step in caring for a live oak. What you do afterward can affect how well the tree recovers and how prepared it is for future seasons.

How Should I Care for a Live Oak After Pruning?

After pruning, avoid adding new stress to the tree. This is not the time for major root disturbance, construction near the trunk, or aggressive changes in watering. Instead, focus on consistent, appropriate watering based on soil conditions, especially in drought-prone areas. Maintain a mulch ring around the root zone, keeping mulch away from the trunk to prevent moisture buildup at the base.

Monitor the tree over the following months for changes in leaf color, early defoliation, or branch dieback. Early detection of problems is easier when you already know which areas were pruned and when.

How Can I Plan a Long-Term Pruning Schedule for My Live Oaks?

A long-term plan includes periodic inspections from an ISA Certified Arborist and multi-year pruning cycles tailored to each tree’s structure and location. This approach focuses on small, thoughtful adjustments rather than large, reactive cuts. By evaluating live oaks regularly, you can correct minor structural issues, manage canopy weight, and align pruning with safe-season windows for oak wilt prevention.

Working with a trusted arborist allows you to create a pruning calendar that respects both your live oaks and Central Texas conditions, ensuring that these iconic trees remain strong, safe, and beautiful for years.

Schedule Your Live Oak Pruning Consultation

Trimming and pruning live oaks safely in Texas requires more than a ladder and a saw. When you follow oak wilt guidelines, avoid pruning from February through June, paint cuts promptly, and plan structural work carefully, you protect both your trees and your neighborhood canopy.

Our ISA Certified Arborists at Happy Tree Service of Austin understand the timing, techniques, and local conditions that keep live oaks healthy. If you are unsure about when to prune, concerned about symptoms, or ready to plan long-term care, you can call us at 512-599-9948 or reach out online to schedule a consultation with an ISA Certified Arborist for pruning plans or oak wilt concerns.

Proper Tree Pruning

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Trees require pruning for a wide variety of reasons. Trees are usually pruned in order to promote growth, prevent overgrowth, remove damaged or diseased branches, or to simply improve landscaping aesthetic.
Whatever your reason for pruning your tree, it is important that you take the proper steps in order to ensure your safety and the health of the tree. Tree pruning is a relatively simple task and can be done by do-it-yourselfers, but sometimes these tasks may be better suited for professional tree services.

Improper trimming of the tree branches can result in exposing the tree to a number of diseases and insects. Untrained professionals must trim branches properly in order to promote good healing of the branch. Do-it-yourselfers may be able to remove smaller, more manageable branches. However, larger branches and limbs may be better suited for experts. Branches may be heavy and may put you and others in danger of injury.

The autumn and winter months might be the best time to prune your trees. During this time, trees lose their leaves and make it easier to see and access the branches. Additionally, less sap may be lost in the process, reducing the stress to the tree.

Begin with smaller branches and limbs. Remove the limbs in segments – not all at once. Cut larger limbs into three cuts. The first cut is placed in the bottom of the limb to prevent the bark from splitting. A relief cut is placed a few inches from the notch cut and goes all the way through, removing the branch weight so the final cut can be made without splitting. The final cut is placed where the limb extrudes from the branch collar. Follow the angle of the branch collar when making the cut. These steps must be followed in order to ensure the health of the tree. If you are unconfident in your ability to prune a tree, contact a landscaping service.

Four Things to Know Before Hiring an Arborist

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1. Not all trees need pruning every three to five years.
Pruning is a necessity in order to ensure proper growth and harvest. Fruit trees must be pruned to ensure a high quantity and high quality yield. Additionally, flowering trees produce larger and more abundant flowers when pruned periodically. Other trees should also be pruned periodically to ensure proper leaf density and to contain new growth. However, some trees grow slower than others and do not need as frequent pruning. Pay attention to how quickly your tree grows before beginning a pruning cycle.

2. If your tree contains dead branches, you should get it pruned.
A tree with dead branches can be a hazard to your home, business, and to bystanders – especially if situated in an urban area. Dead branches may also signify that your tree is diseased. If your tree has dead branches, call a professional such as the Happy Tree Service of Austin to safely remove the hazard.

3. If fungi, mushrooms, or mold is growing on your tree, you might be in trouble.
If you see fungi growing in your tree branches, this may be a sign of a larger problem. Mushrooms may have taken over the inside of the tree and may have begun the decomposition process. If this is the case, your tree may not be savable, especially if the decomposition process has begun within the main trunk of the tree.

4. Ask about seasonal pricing and discounts.
During the spring and summer, tree growth rates are at a maximum. As a result, landscaping companies are in full swing during these times and may charge extra to compensate. If your trees do not need immediate service and pose no danger to others (i.e. no dead limbs or branches), ask about winter pricing. During the winter, tree services are generally less busy and may offer discounts to encourage business.

When To Prune Trees

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If you’re just getting into and learning about tree care, you may find yourself wondering when the best time is to prune your trees. This will mostly depend on your reason for pruning- are you trying to remove dead limbs? Increase flowering? Figure that out, and then plan what season is best for you to work on your trees.

First, know that you should try not to prune your trees in the fall. Pruning usually increases new growth of some kind, and this is not ideal if the climate is about to get freezing cold. Not to mention, cuts won’t heal as quickly as in other seasons, and this will leave the tree vulnerable to the fungal spores that spread more during fall. You may want to get the pruning out of the way, but allow yourself to wait until all the leaves drop, the limbs are more visible, and the tree has better chances of surviving the rest of the year.

After fall passes, however, you are free to prune your trees in winter. This is a popular time to prune, because while your tree is dormant, you can make cuts that will insure more growth in the spring. If you plan to do this, you should probably wait until the coldest part of the season is over.

But if you weren’t planning on increasing growth, and instead want to slow the growth of your tree, plan to prune in the warmer months of the year. Summer is a good time to decrease the growth of any unwanted branches. In addition to dwarfing parts of your tree, you may also want to remove dead wood or defective branches during this time. In summer, you can see the limbs very easily.

Once you know what you want to achieve with pruning your tree, figuring out when to do it is easy. Plan accordingly for the weather and climate of your specific area, and good luck!

Summer Tree Care

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During the warmer months, your trees – young and old – will need special attention in order to stay healthy. There are a lot of ways to provide this attention and care, with some of them being particularly crucial if you want healthy and happy trees at the beginning and end of your summer.

For starters, if you’ve considered hiring a professional to evaluate your trees, summer is a good time to do so. When the climate is hot and often very dry, you may need an expert opinion on how best to take care of your trees. They will suggest a lot of ways to keep them healthy, one of which is mulching. A lot of people mulch their trees in the spring, but there’s still time in the summer. Putting mulch around the base of your tree should regulate soil temperature and hold in moisture.

Other treatments include pruning and irrigating your trees. Irrigation is especially important during the summer, and very important for your younger trees. Always be sure to focus more on less-frequent watering that goes deeper to the roots, rather than more constant, quick watering.

Depending on where you live, another danger that summer brings to your trees is the possibility of storms. This is where a professional is useful- they can look at the position of your trees and determine any danger of damaging property during a summer storm. You can also remove limbs or cable some of them up to try and limit the potential damage.

There can be a lot that goes into caring for a tree. But once summer is over and your trees are happy and healthy, the effort will be worth it. Be sure to either do research or speak to an expert about how your particular climate and location will affect your trees during the summer.

Tree Pruning Basics

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Trimming and pruning trees can enhance the natural beauty of a landscape if done right, but can also hold the risk of permanently damaging a tree or shrub. A tree will naturally grow and form into the shape that benefits the most from the surrounding area and how light coverage is affected, so even without pruning a tree will be able to grow healthily. If you do want to try pruning your trees or shrubs, keep in mind that it takes proper understanding and skill in order to complete successfully.

Pruning is done in order to train the plant into a specific shape, maintain the tree or shrub’s health, improve flowering quality, or restrict growth. Regardless of the specific purpose, pruning should always be done methodically with a goal in mind. The first step should always be to cut off all dead, diseased, or broken branches. Additional removal of branches should only be done if you want to train the tree, if the tree still seems crowded, or if there is a hazard.

Depending on which type of plant you are pruning, the recommended time to prune can vary. Following the recommended time of year to prune the plant will reduce the risk of damaging and weakening the plant. The best time of year to prune most plants is during the late winter of early spring in the time before the new growth starts.

Another important part of pruning is taking care of your tools. Equipment that is properly taken care of will last longer and do a better job. After using equipment, oil it in order to keep it from rusting. The most popular shears are scissor action pruning shears and anvil action shears. Other tools, such as lopping shears and pole pruners, are used for cutting bigger and harder to reach branches.

Always make sure to consider the circumstances, such as season, age, and type of the plant, before attempting to prune. With proper research and practice, you should be able to prune successfully.

Tree Trimming Tips

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If you’re interested in trimming and tending to your plants, there are a few things that you should keep in mind before you start. Trimming can make your plants look beautiful, take care of any health issues, and keep unruly branches out of the way from hazards. But if not done properly, trimming can end up damaging the tree or shrub.

One of the key things to keep in mind when trimming a plant is which branches can be cut and which need to be kept. Unless it’s for a good reason, it’s better not to remove a branch that is over five centimeters in diameter. It’s also highly recommended that you only trim a plant when it is in its dormant season unless there is a hazard. Wait until the coldest part of winter is passed before pruning and you will see a more vigorous growth in the spring. If the branch is dead, however, you can trim it regardless of the season. You should also try to only trim the branches that have narrow angles rather than the stronger, broader angles. Trimming branches when they’re younger is also better for the tree or shrub than if you trim older branches.

An overall good tip is to not trim or prune your plants during the fall. During the fall, decay fungi spread their pores more than any other season. This leads to wounds healing very slowly and can leave scarring and increase the risk of complications. When you trim in the spring to enhance flowering, make sure to wait until all the flowers fade before pruning. Trees or shrubs that produce flowers in the summer should be pruned in winter instead of fall.

Trimming and pruning your plants can be cost-efficient and make your landscaping look more attractive and healthy. But if you aren’t confident with your pruning, you can always do some extra research or hire a professional.

When to Call an Arborist

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No matter how strong your green thumb may be, growing trees can be very high maintenance. And at some point, if you start to notice certain symptoms or signs in your trees, you may find that you need a professional’s help. Here’s what you need to know about consulting an arborist about your trees.

Trees require a lot of maintenance, and you have first to make sure that yours are getting enough nutrition, sun, water, pruning, and a good environment. But, if even after all of those factors, your tree is showing signs of sickness- it may be time to bring in an expert. Think about consulting someone if your tree’s leaves are falling off more than expected, or if they show discoloration. Also, check the bark and branches of the tree- if the branches near the top are dying, your tree could be in trouble. See if the bark is splitting or peeling more than usual. And see if there are any growths on or around the trunk of your tree.

The causes of these symptoms are varied, the acidity and quality of the soil could be affecting it, for instance, in which case an arborist will test the soil and give you information on making changes to your fertilizer. But in some cases, there may not be a solution to saving your tree, and the arborist may have to recommend removing it. Regardless, if you are having problems with your tree’s health, consulting a professional is the way to go. Many companies offer free first inspections, while some others charge around $50-75 for one. And if you need a tree removed, you can hire someone for that as well. You’ll be glad that you consulted someone with an expert opinion, and that expert will do all they can to try and save your tree.

Is It Time To Remove A Tree?

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Trees provide shade, climate moderation, soil protection, and aesthetic character. In fact, trees are often the key features of one’s property. Unfortunately, there are times when trees can prove troublesome or dangerous. When trees develop damage or disease, they pose threats to people and structures. While professional trimming can help extend the life of a tree, there are times when it might be prudent to remove the tree. There are many questions to consider when considering tree removal.

Working with a professional arborist, ask yourself is the tree in question a desirable species. Undesirable species include those that are prone to breakage or disease, have shallow roots, or are particularly invasive. If the tree is deemed undesirable, you may choose to remove it entirely.

Damage to more than half the tree likely warrants removal. In some cases, specific damage to tree trunks may lead to removal, though smaller wounds can generally heal over, thus saving the tree. Trees that rot and have hollow interiors are ripe for further damage, even though many trees can live for years with a hollow trunk. While trees are resilient, and you do not want to take them out unnecessarily, be aware that damage from falling trees and limbs can cause significant property and personal damage.

Trees that are not diseased, but rather leaning may also need removal. If the lean is sudden, then there may be underlying damage, but in any case where the lean in pronounced, removal is advised.

Trees growing under power lines need to be monitored. If they grow too close to the line, tree limbs can cause damage or power outages if left untrimmed. However, removal of any limbs near power lines should only be done by professionals.

Other factors to consider include historic or sentimental value, sight lines, and overall health of the property in question. As you can see, tree removal requires careful consideration of many factors and generally should be done with the consultation of a professional arborist.

Top 3 Harmful Trees for Pets & Livestock

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Although trees provide shade, shelter, and beauty to your home or property, they can also be a contributing cause of illness to large animals such as horses, and cattle. Some trees are so poisonous they can result in anemia, kidney failure, and even cyanide poisoning for larger animals.
Although animals don’t usually eat the leaves or twigs of these trees, rain can wash the poison into their water sources. Watch out for fallen twigs and leaves, especially after storms. To protect your pets and livestock, stay away from planting these top 3 harmful trees.

1. Red maple (Acer rubrum)

Red maple trees, usually found in the northeastern United States, produce poisonous leaves that can harm horses. The leaves of the red maple drops are poisonous for up to four weeks after falling. A horse that consumes these leaves may demonstrate signs of anorexia, pale mucous membranes, and red-ish-brown urine. The poison in the leaves can lead to acute renal failure which can kill horses.

2. Oak (Quercus species)

Oak trees, found in the eastern United States, are poisonous to all large animal species: cattle, sheep, horses, and goats. However, oak poisoning is most common in cows and calves. The poison is found in the green buds that grow in the spring and in the acorns on the ground in the fall. Depending on the amount ingested, poisoning can lead to anorexia, dullness, and constipation. Cattle feces are often hard and covered in mucus. Later signs of poisoning include dehydration and hematuria. Horses may show bloody diarrhea. Death may occur within 3 to 7 days.

3. Box elder (Acer negundo)

Box elder trees are widespread throughout North America and found in many ranches and pastures. The seeds produced by this tree pose a fatal threat to horses. Ingestion of just 165 seeds could result in toxicosis. Ingestion of these seeds is associated with seasonal myopathy (a disease of muscle tissue), usually in the fall. Horses often become weak and reluctant to move. Muscle tremors are common and some horses may not be able to stand on their own. Death can occur within 72 hours of ingestion.

If you find any of these trees on your property and you fear for the safety of your pets or livestock, then please contact the tree-removing professionals at Happy Tree Services and we can remove any unwanted trees or bushes.