Apollo O'Neil is a Board Certified Master Arborist
At O'Neil's Tree Service, every pruning cut serves a purpose. We follow the most current arboricultural science and ANSI A300 standards to increase safety, improve structure, and support long-term tree health. Apollo O'Neil is an ISA Board Certified Master Arborist. We serve Clearwater, Palm Harbor, and communities throughout Pinellas, Hillsborough, and Pasco counties.
What Is Tree Pruning?
Tree pruning, more often called tree trimming, is the act of using tools such as loppers, saw blades, shears, and chainsaws to remove specific portions of woody tissue from trees and plants. When trees are being pruned, each cut does some degree of harm. This makes it really important to understand when the benefits of pruning don’t outweigh the harm done.
When a person is trained and educated in the science of trees and understands how trees grow and respond, pruning becomes a way to preserve and manage trees so they remain beautiful, successful in their environment, and valuable to the people who get the privilege of having them on their property.
Every pruning cut should be made with a clear purpose while also weighing the pros and cons of each cut as it is carried out. Good pruning can reduce the risk of failure, increase safe clearance from structures, open or improve views, build strong structure, and increase the useful lifespan of a tree. When pruning is done correctly, we get the most positive results for the tree and the people lucky enough to have them on their property and in their community.
Most tree companies simply cut branches at the direction of the homeowner without knowing why they are cutting those branches or what the cuts are actually doing to the tree. They are cutting the tree rather than pruning it. Only a few professionals are trained to ask WHY, understand what the tree needs, and avoid turning pruning cuts into casual trimming that usually carries more negative effects than positive ones.
When the risk of tree failure exceeds what can be managed through pruning or supplemental support systems to a level acceptable to the owner, we discuss tree removal as a last resort.
Types of Tree Pruning We Offer
We perform the following pruning techniques based on what your tree actually needs, not what is fastest:
Reduction pruning shortens the length of a branch or the overall crown by making cuts back to a lateral branch that is at least one-third the diameter of the branch being removed. This reduces wind-load, decreases the lever arm effect on the attachment point, and lowers the bending moment that storm winds can apply. Shorter branches mean less force and a safer tree.
Structural pruning is performed on young and maturing trees to establish a strong branching architecture before problems develop. The goal is to develop a dominant central leader where appropriate, space lateral branches vertically, and remove branches with weak attachments early, when the wounds are small and the tree can manage them easily.
Crown raising removes the lower branches of a tree to provide clearance over grade, driveways, sidewalks, structures, and vehicles. Clearance standards used in Pinellas County are generally 8 to 10 feet over sidewalks and grade and 12 to 14 feet over roadways and parking areas. Clearance over structures depends on the situation.
Crown cleaning is the removal of dead, dying, diseased, broken, and weakly attached branches from throughout the canopy. It reduces risk to people and property while removing wood that is no longer serving the tree structurally. It is worth noting that dead wood in the canopy is not without value to the broader ecosystem. Cavity-nesting birds, woodpeckers, and insects that feed other wildlife all depend on dead wood habitat. When we recommend crown cleaning, we are weighing structural risk against those benefits, not simply assuming dead wood has no place in the system.
Deadwooding is the targeted removal of dead branches, a subset of crown cleaning. Dead branches do not seal over and become increasingly brittle over time, which makes them a predictable and preventable source of property damage and injury. Because live wood retains tensile strength and dead wood does not, dead branches are more likely to fail under load or with little provocation. In practice, removal decisions are often based on diameter thresholds, commonly 1 inch, 2 inches, or 3 inches and above, depending on what is below the tree and the risk tolerance of the property owner.
Crown thinning selectively removes branches throughout the canopy to increase light penetration and airflow. We use this technique carefully and conservatively. Over-thinning, often done incorrectly as interior cleaning or sucker removal, is one of the most common and damaging mistakes in the industry. It increases branch elongation, reduces taper, concentrates density in the branch ends, and increases failure risk rather than reducing it.
Signs Your Tree Could Need Pruning
If you notice any of the following, it is worth having your trees inspected by a certified arborist:
- Branches hanging low over your home, driveway, sidewalk, pool screen, or lawn
- Dead or dying limbs (this could also indicate the tree needs Plant Health Care)
- Branches rubbing together (abrasion leads to decay and eventually failure)
- Cracks, seams, or bulges in the trunk or major limbs
- V-shaped branch unions or included bark at the attachment point (included bark is bark that becomes trapped between two co-dominant stems as they grow, creating a weak union that is prone to splitting)
- Large limbs extending over structures
- Thickly foliated branch ends that look heavy or block airflow to the interior
- Branches touching your roof or structures
- Storm damage such as broken or dangling branches
- Low branches that hit vehicles, block signs, or block views
- Cavities or decay pockets in trunks, stems, or branches
- Mushrooms such as Ganoderma conks or decay fungi near old pruning cuts (this could indicate the tree needs PHC or removal)
Pruning done at the right time prevents bigger problems later. The right time is before something fails, not after.
When Pruning Is Not the Right Answer
Pruning is a controlled injury to a living tree. It is very similar to surgery on the human body. Surgery is performed because what it fixes is more harmful to long-term health than the injury caused by the surgery itself. The same idea applies to trees. Pruning has pros and cons. The benefits must outweigh the cost of removing living tissue. If there is no clear benefit, pruning may not be the right choice.
Trees cannot heal the way human skin heals. A tree walls off the injury internally and externally instead of closing it with new tissue. This is more like scar tissue. That wood, once dead, will never be alive again. The quality and size of a pruning cut directly affect how well a tree can contain the injury. Bad cuts, large cuts, and unnecessary cuts create wounds that are harder to overcome.
If pruning is not helping the tree stay safer or healthier, it should not be done.
When Is the Best Time to Prune Trees in Florida?
Spring, late fall, or winter. The German pruning standards, which are recognized by much of the world as the authority, recommend spring. The North American pruning standards recommend when the tree is dormant, which is winter. In Florida, the best time likely depends on the age of the tree, the species, and its vigor. Old, stressed trees are probably best pruned when dormant. Young trees are probably best pruned in the spring, but any time is likely acceptable for a healthy tree.
Many homeowners wait until just before hurricane season. This drives many arborists crazy. Ideally, pruning would be done earlier in the season, with tree removals handled in winter when conditions are more favorable for wound management and crew safety.
Does Pruning Actually Make Trees Safer in Storms?
Yes. When pruning is done correctly, it reduces wind-load and helps prevent failures. Many published resources cite university research demonstrating that reduction pruning, used on individual limbs or entire crowns, not only reduces the chances of tree failure but that the resulting load reduction can be calculated using mathematical formulas.
When strong winds hit a tree, the lever arm created by long limbs increases the load at the attachment point and down to the roots. By shortening the length of a limb or branch using reduction cuts, generally no bigger than 3 inches in diameter, we can reduce the leverage and the bending moment that wind can apply. Less leverage means less force, which means less chance of failure.
Shorter branches equal less force equals a safer tree.
Many people think that simply thinning the interior growth, often incorrectly called suckers, makes a tree safer. This is actually the opposite. Interior thinning increases branch elongation, reduces taper, concentrates more density in the ends of branches, and often creates wounds along the tops of branches where you have more of the flexible woody fibers called cellulose. Reducing length and density correctly is what reduces the risk of failure, not removing interior wood.
How to Choose a Tree Pruning Company
It can be difficult for someone who is not trained in arboriculture to know if they hired the right company. Below are some things to look for and specific questions you can ask that will help you choose a company with good ethics, training, and a long-term focus on trees.
Training and Credentials
Do they have ISA Certified Arborists on staff and involved in the work? What training do the people performing the work actually have? Ask for copies of certifications, not just a claim. Credentials show knowledge. Integrity and ethics are a separate matter.
Visible Safety Practices
Do they wear eye protection, helmets, boots, and ideally chainsaw pants? Look at photos of their work or watch them on site. If you do not see these basic safety practices, you probably do not have the right company.
Professional Presentation
Does their equipment look clean and presentable? Do the employees look professional and wear consistent uniforms?
Employee Culture and Attitude
Do the employees look happy, confident, and appreciated? Happy employees move with purpose, communicate clearly, and show more passion. Employees who are receiving frequent education and training usually act like they care. Ask about their boss or the arborist you met with. If they talk poorly of the people in charge, that could be a bad sign.
Communication and Honesty
Do they look you in the eye when they speak? When you ask why a branch is being cut, do all team members give the same answer? That consistency shows they are being trained with purpose and following a philosophy.
Company Structure and Education
Does the company have a written employee handbook? Does the company have a safety program specific to tree work? Do employees receive ongoing arboriculture and safety training? Ask for proof of completion or training schedules.
Reputation and Transparency
Do they have good reviews over a long period of time? Ask for the address of a current job site and go observe how they work. See how they interact with neighbors, how they set up safety zones, and how they clean up.
Outside References
Call your local city arborist and ask if they would hire that company to protect their own home. That question is powerful. It shows what professionals trust. Look for membership in the TCIA and ISA as a sign of industry involvement and standards.
A Simple Test to Check a Company's Ethics
You do not have to be an arborist to judge integrity. Learn a little about trees and ask real questions. If someone will lie to your face, what do you think happens when you are not standing there?
Ask “Why are you making this cut?” and see if the answer is about:
- Safety
- Structure
- The long-term success of the tree
Not:
- “Because it looks better”
- “Because the customer asked”
A real tree professional will explain the purpose, not follow orders blindly.
The 12-Inch Branch Test
Ask, “Can you remove this 12-inch diameter branch?” (This is not good for any tree.) If the only answer you get is “yes,” with no questions about why you want it removed and no discussion of the pros and cons, you do not have a tree care professional.
A real arborist will ensure that you feel the benefits of pruning will outweigh the damage done before removing live tissue. Imagine a doctor who said yes when you asked them to remove your kidney, with no questions, no diagnosis, no risks explained, and no alternatives considered. You would walk away from that surgeon. The same logic applies to trees.
These are just a few simple ways to see if you have the right company on your property. Choosing the right team can make your tree safer today and healthier for decades.
Tree Pruning Throughout Pinellas, Hillsborough, and Pasco Counties
O’Neil’s Tree Service provides tree pruning throughout Pinellas County and surrounding areas. Below are some of the communities we serve regularly, with notes on what we commonly see there.
Palm Harbor
Palm Harbor has a mix of mature live oaks, laurel oaks, and water oaks, as well as a variety of pine trees and numerous other species common to neighborhoods like Ozona, Crystal Beach, and along US Highway 19. Many of these trees were planted 30 to 60 years ago and now show structural defects caused by improper thinning, hurricane wounds, or storm damage.
In Palm Harbor, we often recommend reduction pruning for large oaks to reduce wind-sail and increase resilience in storms, crown cleaning to reduce falling deadwood, and structural pruning for young trees in newer communities like East Lake. Palm Harbor follows Pinellas County permitting rules for street trees and certain protected species.
Clearwater
Clearwater’s mature canopy includes large live oaks, laurel oaks, Washingtonia palms, royal palms, slash pines, and the occasional banyan. Due to the age of the canopy and the possibility of coastal wind effects, these trees require correct reduction and structural pruning, not aggressive interior thinning.
We regularly prune trees in Harbor Oaks, Island Estates, North Clearwater Beach, Coachman Ridge, and Bayview to increase safety without damaging tree structure.
Dunedin
Dunedin’s older neighborhoods have mature canopy trees such as live oaks with low clearance over driveways and small lots. Many older laurel oaks show decay pockets from previous large branch removal and from storms, including Hurricane Idalia and Ian.
Our approach in Dunedin focuses on reduction pruning on older trees and structural pruning on younger trees, avoiding the common lion-tailing that weakens branches. Along the coastal areas near Edgewater Drive, salt exposure and soil conditions can change the way trees grow and live. Much like humans, trees struggle more with changes as they age.
Safety Harbor
Safety Harbor trees grow in compact urban soils near historic homes and waterfront areas. The local canopy includes mature live oaks, laurel oaks, and large pines. It is also the home of the Baranoff Oak, a live oak believed to be over 300 years old.
Pruning in Safety Harbor often means correcting old lion-tailing and helping trees rebuild and maintain healthy branch structure. Neighborhoods like Harbor Woods North, North Bay Hills, and areas near Philippe Park benefit from crown cleaning, crown raising, and reduction pruning.
East Lake
East Lake has some of the most beautiful mature live oaks in Pinellas County. These trees benefit from long-term reduction and structural pruning, not cosmetic trimming. Because East Lake properties often have dense canopies over homes and driveways, our focus is reducing risk while preserving shade and tree health. We prune trees throughout Ridgemoor, Lansbrook, Cypress Lakes, and Tarpon Woods.
Oldsmar
Oldsmar trees frequently grow in wet soils and storm-exposed areas around Tampa Bay. Much of Oldsmar was once swampland, and live oaks and laurel oaks often need structural pruning correction, especially when grown near water where wind potential is greater. We provide proper pruning for neighborhoods such as East Lake Woodlands, Harbor Palms, Sheffield, and Oldsmar Galleria areas.
Tarpon Springs
Tarpon Springs combines large oaks, cypress, pines, and ornamental trees with wet soil conditions from Spring Bayou and the Anclote River. Our pruning helps reduce the risk of branch failures caused by saturated soils and strong Gulf winds. We prune throughout Whitcomb Bayou, Sunset Hills, and North Lake areas, focusing on forming strong structure on young trees and preserving large trees against storm-related failures.
Belleair
Belleair’s tree canopy includes large mature oaks, pine stands, and palms around historic properties and golf courses. High-value trees in Belleair require precision pruning to reduce risk without impacting aesthetics. We frequently prune trees near Belleair Country Club, The Pelican Club, Belleair Beach, and Belleair Shore.
Largo
Largo’s canopy includes mature oaks, pines, and palms placed near homes, power lines, and older neighborhoods. Proper pruning helps reduce failure risk from long branches and weak unions caused by previous over-thinning. Our team maintains trees across Belleair Bluffs, Harbor Bluffs, South Largo, and Ridgecrest.
St. Petersburg
St. Petersburg has a diverse tree canopy, from royal palms and Sylvester Date palms to live oaks and ornamental species in historic districts. Because St. Pete homes sit close together, pruning must consider structure, sightlines, and safety, not just branch removal. We serve neighborhoods like Old Northeast, Snell Isle, Kenwood, Crescent Heights, and Jungle Terrace.
Tampa
Tampa has a different growing environment and a large species diversity, including live oaks, sabal palms, southern magnolias, camphor, eucalyptus, and bald cypress. Some of the oldest and most beautiful trees in central Florida stand in the older Tampa neighborhoods. Urban pruning in Tampa must consider tree preservation, road clearance, storm exposure, and property safety in dense neighborhoods. We serve Westchase, Carrollwood, Hyde Park, South Tampa, Davis Islands, Bayshore, and New Tampa.
Odessa
Odessa has large estate-type properties with mature oaks, pine stands, and small accent trees around lakes and open spaces. Because Odessa trees experience open wind and potential storm exposure, pruning is focused on structural strength, not cosmetic shaping. We help homeowners maintain safe trees around Lake Keystone, Tarpon Springs Road, and Starkey Ranch.
Westchase
Westchase communities have HOA requirements and street-lined canopies of live oaks and ornamental trees. Pruning here must follow ANSI A300 standards while meeting clearance, safety, and aesthetic guidelines. We support neighborhoods like The Greens, The Reserve, Waterchase, and West Park Village.
Carrollwood
Carrollwood has older tree systems with large oaks planted close to homes during early development. These trees often need structural correction, removal of deadwood, and reduction pruning to protect roofs and improve resilience in high winds. We prune across Original Carrollwood, Carrollwood Village, and Lake Carroll.
Our Credentials
O’Neil’s Tree Service has ISA Certified Arborists on staff. Apollo O’Neil holds the ISA Board Certified Master Arborist credential, the highest credential available through ISA. All work is performed in accordance with ANSI A300 pruning standards and ANSI Z133 safety standards. We can assist with any required permits to ensure your tree maintenance is not just done correctly but in full compliance with state, county, and city regulations.
Permitting resources by county:
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Hillsborough County Grand Oak Trimming Regulations: hillsboroughcounty.org
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Pasco County Tree Maintenance: pascocountyfl.net
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Pinellas County Mangrove Trimming Regulations: pinellascounty.org
Tree Pruning FAQ — Honest Answers from a Board Certified Master Arborist
There really isn’t a meaningful difference in the tools used. The difference is in the knowledge behind the work. Pruning is done with a clear purpose: safety, structure, and the long-term success of the tree. Trimming is most often done with no plan and is directed by whoever is holding the saw. A trained arborist prunes. Many untrained companies simply trim.
Many urban trees, if pruned correctly, only need pruning every three or more years. This depends on the species and the age of the tree. Young trees grow faster than older trees, and certain species grow faster than others. A good rule of thumb is that the longer a species lives, the slower it grows. Laurel oaks live 50 to 75 years and grow relatively fast. Live oaks may live 200 to 300 years and grow more slowly. Younger, more vigorous, faster growing trees may need pruning more frequently than every three years as a result.
Spring, late fall, or winter. For old or stressed trees, dormancy in winter is probably safest. For young, healthy trees, spring is likely ideal, though any time is generally acceptable. Many homeowners prune just before hurricane season. Ideally, pruning would be done earlier in the season and removals handled in winter.
Yes, when done correctly. Reduction pruning, used on individual limbs or entire crowns, reduces wind-load and lowers the bending moment that storm winds apply. By shortening branch length with proper reduction cuts, we reduce the lever arm effect at the attachment point. Shorter branches mean less force and a lower chance of failure. Thinning the interior without reducing length does not achieve this and can actually increase failure risk.
Yes. Pruning is a controlled injury. Every cut does some degree of harm. A tree walls off the injury rather than healing it the way skin heals. The goal is to ensure the benefits of the cut outweigh the harm. Good cuts, made at the right place and the right size, allow the tree to compartmentalize the wound effectively. Large, unnecessary, or poorly placed cuts create wounds that are harder for the tree to manage.
Yes, and it is very common. Over-pruning, especially the practice of removing interior branches while leaving long heavy ends, is one of the most damaging things done to trees in this area. It concentrates weight in the branch ends, reduces taper, increases the chance of failure, and stresses the tree. The correct approach is reducing length and density proportionally, not gutting the interior.
Ask why they are making each cut. A professional arborist will explain the purpose in terms of safety, structure, or tree health. They will not simply follow your direction without question. If you ask to remove a 12-inch diameter branch and the only answer you get is yes, with no discussion of the pros, cons, or alternatives, you do not have a tree care professional. A good arborist will explain what the cut does to the tree before they make it.
