When should I remove a tree?

A tree should be removed if it is dead, dying, or poses an unacceptable risk to people or property. Signs include severe trunk decay, significant leaning, large dead branches, root damage, or proximity to foundations and power lines. An ISA Certified Arborist should perform a risk assessment before removal.

How often should trees be trimmed?

Most mature trees benefit from pruning every 3 to 5 years. Younger trees may need structural pruning every 1 to 2 years to establish good form. Fruit trees require annual pruning. The specific frequency depends on the species, age, and health of the tree.

What are signs of a dangerous tree?

Warning signs include: sudden leaning, cracks in the trunk or major limbs, hollow cavities, dead wood (branches without leaves), mushrooms growing at the base (indicating root rot), peeling bark, and heaving soil near the trunk.

Can a dead tree fall?

Yes. Dead trees lose their structural integrity as the wood decays. They become brittle and are highly susceptible to falling during high winds, heavy snow, or even on a calm day. Dead trees should be removed promptly to avoid property damage or injury.

What is stump grinding?

Stump grinding is the process of using a specialized machine to chip away a tree stump until it is well below ground level. This prevents the stump from resprouting, removes tripping hazards, deters pests like termites, and allows you to replant or grow grass over the area.

When should I call an arborist?

Call an arborist if you notice yellowing leaves out of season, dead branches, signs of insect infestation, fungus on the trunk, or if you need pruning near structures. You should also consult an arborist before construction projects to protect roots, or for a general health assessment.

Why hire an ISA Certified Arborist?

ISA Certification ensures the individual has achieved a level of knowledge in the art and science of tree care through experience and passing a comprehensive exam. Certified Arborists understand tree biology, proper pruning techniques, and safety protocols, ensuring your trees are cared for correctly rather than simply "hacked" apart.

Knowledge Center

Tree Safety & Risk Assessment FAQs

Learn How to Recognize Tree Hazards Before They Become Emergencies

Trees are one of the most valuable features of your property, but they can also become one of the greatest safety risks when they are damaged, diseased, or structurally unstable. Many hazardous trees show warning signs long before they fail. Understanding those signs can help prevent property damage, personal injury, and costly emergency situations.

At Precision Tree Experts, our ISA Certified Arborists perform professional tree risk assessments throughout Easton, Bethlehem, Allentown, the Lehigh Valley, and Western New Jersey. Our goal is to help homeowners and businesses make informed decisions about tree safety while preserving healthy trees whenever possible.

Request a Free Estimate Tree Risk Assessments

Not Every Tree Needs to Be Removed

One of the biggest misconceptions we encounter is that every unhealthy or damaged tree should come down. In reality, many trees can be preserved through proper pruning, structural support, or proactive plant health care.

Our ISA Certified Arborists evaluate each tree individually, considering factors such as species, age, structural condition, location, and overall health before making recommendations. When a tree can be safely preserved, we'll explain your options. When it presents an unacceptable risk, we'll help you understand why removal may be the safest solution.

Our goal is to provide honest recommendations that prioritize both safety and the long-term health of your landscape.

Tree Risk Assessments Plant Health Care Tree Removal

1. How do I know if a tree is dangerous?

Quick Answer:

A tree may be hazardous if it has significant dead branches, large trunk cracks, visible decay, severe leaning, root damage, hollow areas, or has been weakened by storms, disease, or insects.

Not all dangerous trees look unhealthy. Some trees appear full of green leaves while hiding serious structural defects beneath the bark or below the soil. Warning signs to watch for include: • Large dead branches • Cracks in the trunk • Cavities or hollow sections • Mushrooms growing near the base • Peeling bark • Leaning that has recently developed • Exposed or damaged roots • Branches hanging over your home • Soil lifting around the base • Large limbs with visible splitting If you notice any of these conditions, it's important to have the tree evaluated by a qualified arborist before the problem becomes an emergency.

2. What is a tree risk assessment?

Quick Answer:

A tree risk assessment is a professional evaluation that identifies structural defects, health concerns, and environmental factors that could increase the likelihood of tree failure.

Tree risk assessments help property owners make informed decisions about tree safety. During an assessment, our ISA Certified Arborists evaluate: • Tree species • Overall health • Structural stability • Root condition • Branch attachments • Signs of disease • Insect activity • Soil conditions • Nearby structures • Likelihood of failure • Potential consequences if failure occurs Rather than automatically recommending removal, we explain all appropriate management options, including pruning, monitoring, treatment, cabling, or removal when necessary.

3. Can a healthy-looking tree still be dangerous?

Quick Answer:

Yes. Some trees have hidden internal decay, root damage, or structural defects that aren't visible from the outside.

A full canopy of green leaves doesn't always mean a tree is structurally sound. Internal decay, root rot, insect damage, or compromised branch unions may not be obvious without a professional inspection. This is why mature trees located near homes, driveways, sidewalks, or play areas should be inspected periodically, especially after severe weather.

4. Is a leaning tree always dangerous?

Quick Answer:

Not always. Some trees naturally grow with a slight lean, while others develop a dangerous lean due to root failure, storms, or soil movement.

The key question is whether the lean is new or changing. Sudden leaning, lifting soil around the roots, or visible root plate movement can indicate instability and should be evaluated promptly. If a leaning tree is close to your home, garage, driveway, or neighboring property, scheduling a professional assessment is recommended.

5. What are the most common signs of tree failure?

Quick Answer:

Common warning signs include dead limbs, trunk cracks, cavities, mushrooms, exposed roots, soil movement, heavy lean, and significant storm damage.

Trees often provide warning signs before failure occurs. Recognizing those signs early allows property owners to address problems before they become emergencies. Our arborists evaluate not only the visible symptoms but also the underlying causes that may contribute to failure.

Concerned About a Tree?

If you have any doubts about a tree's condition, don't wait until the next storm. Schedule a professional Tree Risk Assessment today.

Request a Free Estimate

6. How often should mature trees be inspected?

Most mature trees should be professionally inspected every one to three years, with additional inspections following severe storms, construction, or visible changes in tree health.

7. Can tree roots create safety problems?

Yes, tree roots can create significant safety and property concerns. As roots expand, they can cause sidewalk lifting and create trip hazards. Roots searching for moisture can also invade damaged pipes or impact foundation stability. Furthermore, root decay or soil instability can compromise the entire tree's structural integrity, making it more susceptible to falling during high winds.

8. Can storms weaken a tree even if it doesn't fall?

Yes. Wind, lightning, heavy snow, and saturated soil can damage roots, split trunks, or weaken branch attachments without causing immediate failure. The damage may not be obvious right away, which is why post-storm inspections are critical for identifying compromised structures before they eventually fail.

9. What is included in a professional tree inspection?

A professional tree inspection by an ISA Certified Arborist is a comprehensive process that includes: • Visual inspection of the entire tree • Root flare evaluation to check for girdling or decay • Trunk assessment for cracks, cavities, and structural integrity • Canopy evaluation to identify deadwood and poor branch attachments • Defect identification and risk rating • Clear recommendations for mitigation or management

10. Should dead branches always be removed?

Dead limbs can become hazardous over time, particularly if they overhang homes, sidewalks, driveways, or outdoor living areas. They are brittle and can snap unexpectedly. Professional pruning reduces the risk of branch failure and improves the overall safety of your property.

11. Can tree diseases make a tree unsafe?

Yes. Certain diseases weaken wood, damage root systems, or accelerate decay, increasing the likelihood of structural failure. Fungal infections, for example, can rot the trunk from the inside out, making the tree incredibly dangerous even if the canopy still looks partially alive.

12. Should I have my trees inspected after construction?

Construction activities can damage roots, compact soil, and alter drainage around trees. Because the majority of a tree's feeder roots are in the top 18 inches of soil, heavy equipment can cause severe stress. An inspection helps identify hidden damage before decline becomes noticeable.

Related Links:

Tree Risk Assessments Plant Health Care

13. Can cabling or bracing save a tree?

In some cases, yes. Structural support systems may help preserve valuable trees with weak branch unions or other structural concerns. Our arborists will determine whether support systems are appropriate and can install them safely to reduce the risk of failure.

14. Why should I hire an ISA Certified Arborist instead of relying on a visual guess?

An ISA Certified Arborist has specialized training in tree biology, structural assessment, risk evaluation, and industry standards. Professional assessments provide a more reliable understanding of a tree's condition than a visual guess alone, ensuring you receive accurate, science-based recommendations.

15. Why trust Precision Tree Experts to evaluate your trees?

At Precision Tree Experts, we believe every recommendation should begin with a careful evaluation, not a sales pitch. Our ISA Certified Arborists take the time to assess each tree individually, explain what they find in clear language, and recommend the solution that best protects your property and the long-term health of your landscape. If a tree can be safely preserved through pruning or treatment, we'll tell you. If removal is the safest option, we'll explain why and perform the work using professional equipment and industry best practices. Our commitment is to provide honest advice, exceptional workmanship, and tree care you can trust.

Don't Wait Until a Small Concern Becomes a Major Problem

If you're worried about a tree on your property, let our ISA Certified Arborists provide a professional evaluation. Early inspections often identify problems before they become emergencies, helping you protect your home, your family, and your investment.

Request a Free Estimate Tree Risk Assessments Plant Health Care