Trees are often perceived as peaceful giants, offering shade, beauty, and ecological advantages. However, certain trees can be extremely dangerous to both people and property. These dangerous trees range from those with toxic components to those susceptible to collapsing unexpectedly.
At Limitless Tree Service, we have dealt with many dangerous trees over the last ten years. Our experience shows that spotting a hazard tree early can save lives. Let’s examine dangerous trees and how to stay safe.
What Makes a Tree Dangerous?
Not every tree that appears frightening is dangerous. Some seemingly benign trees can be deadly. According to WorkSafeBC’s Occupational Health and Safety Regulation, a danger tree is hazardous due to its location, lean, physical damage, overhead conditions, or deterioration of limbs, stem, or root system.
Here are key factors that can make a tree hazardous:
Structural Issues
Trees with compromised structures are prone to falling or shedding large branches. This includes trees with:
- Multiple trunks or split trunks.
- Large dead branches.
- Tree cavities or decay in the tree trunk.
- Tree leaning more than 15 degrees from vertical.
Disease or Pest Infestation
Unhealthy trees are more likely to fail. Indicators of concern include:
- Fungal infections on the trunk or branches.
- Peeling tree bark.
- Leaves changing color or falling prematurely.
- Noticeable pest-related damage.
Environmental Factors
Even healthy trees can become dangerous because of:
- Construction near the tree’s roots.
- Soil erosion.
- Strong wind or storm exposure.
- Extended periods of dry weather conditions can contribute to tree fall.
Poisonous Parts
Some poisonous trees are hazardous due to their toxic substances. These can harm people and animals through contact or if eaten.
Top 10 Most Dangerous Trees
Knowing what makes a tree dangerous, let’s review some hazardous species:
1. Manchineel Tree (Hippomane mancinella)
Known as “the tree of death,” the manchineel tree is among the world’s most dangerous. Found in the Caribbean and Central America, every part is toxic.
Its tree fruit looks like small apples, called “manzanilla de la muerte” or “little apple of death” in Spanish. The sap causes skin blisters, and rain runoff can cause chemical burns.
Eating any part is potentially deadly, making this an extremely dangerous tree.
2. Bunya Pine (Araucaria bidwillii)
The bunya pine, from Queensland, Australia, poses a different danger. While not a poisonous tree, these trees drop heavy cones weighing up to 22 pounds.
These cones can fall unexpectedly, endangering anyone underneath. A man in San Francisco had a skull fracture from a 16-pound bunya pine tree cone in a park.
3. Gympie Gympie (Dendrocnide moroides)
The gympie-gympie plant, though a shrub, has a severely painful sting. In eastern Australia’s rainforests, its leaves have silica-tipped hairs that inject neurotoxins.
Sting pain can last months, described as burning with hot acid and electrocution simultaneously. This makes it essential for people in the area to learn about local flora for emergency preparedness.
These plants, while not trees, should still be highly regarded for their danger, and even considered to be hazard trees to the locals.
4. Sandbox Tree (Hura crepitans)
The sandbox tree, found in North America and South America, has sharp spikes and explosive seed pods. These pods burst, launching seeds up to 100 meters at 150 mph.
The sap and bark are also poisonous. It is also called the dynamite tree.
5. Suicide Tree (Cerbera odollam)
This southern Asia tree gets its name from its lethal fruit. Between 1989 and 1999, it caused over 500 deaths in Kerala, India. The seeds contain a cardiac glycoside toxin, causing fatal heart attacks.
6. Angel’s Trumpet (Brugmansia spp.)
All parts of the angel’s trumpet plant are very toxic. Eating it can cause hallucinations, paralysis, and death. It’s sometimes grown as a decorative plant, despite its dangers.
7. Oleander (Nerium oleander)
Oleander, a common decorative shrub, is highly poisonous. Consuming even a small part can be deadly.
8. Australian Stinging Tree (Dendrocnide excelsa)
Like the gympie gympie but larger, this tree can reach 35 meters. Its sting can kill horses.
9. Deadly Nightshade (Atropa belladonna)
This plant, more shrub than tree, has toxic berries. Just two berries can be fatal to a child.
10. Yew (Taxus spp.)
Common in gardens, all parts of the yew, except the berry flesh, are very poisonous. The toxin can trigger cardiac arrest. The strychnine tree also contains deadly toxins frequently used in rat poison.
Recognizing Dangerous Trees in Your Environment
Not all hazardous trees are as obvious as the manchineel tree or sandbox tree. There are signs to identify potentially dangerous trees in your surroundings:
Visual Inspection
Regularly check trees for:
- Dead branches or hanging ones.
- Cracks or splits in the trunk.
- Mushrooms growing at the base.
- Peeling bark.
- Tree cavities or rotting wood.
A professional should assess tree health regularly.
Location Assessment
Consider the tree’s location:
- Is it a leaning tree towards structures or high-use areas?
- Are there power lines nearby?
- Has recent construction potentially damaged the roots?
Species Identification
Know the tree species on your property. Some, like the black walnut, harm other plants. Others, like the Bradford pear, tend to split.
Certified arborists in Abbotsford should identify it.
What to Do About Dangerous Trees
If you think a tree is dangerous, act. Steps to take:
- Contact a certified arborist to safely remove any risks and conduct a professional hazard assessment.
- Report trees on public property to local authorities. Regular council meetings often include discussions on tree management, so it can be helpful to voice your concerns.
- For trees near power lines, contact your utility company.
- If a tree poses significant risk, tree removal is necessary.
- Regular pruning and maintenance by professional tree services can prevent many trees from becoming hazardous.
Removing a dangerous tree yourself is very risky. Always consult professionals, like Limitless Tree Service, for safe tree management. Property owners might check their property taxes statements for potential credits related to tree maintenance.
The Importance of Tree Safety
While dangerous trees present risks, most trees are helpful and safe if maintained. Trees offer environmental and health benefits, such as enhancing air quality and lowering stress.
However, the risks of hazardous trees shouldn’t be overlooked. Tragic incidents, like a mother’s death during a Boy Scout hike due to a tree falling, highlight the need for tree safety awareness.
Understanding what makes trees dangerous and identifying hazards allows us to protect ourselves. This should be included in everyone’s strategy for climate action.
Protect Your Home by Addressing Hazardous Trees Today
For any doubts about a tree’s safety, consult a professional tree services company. Limitless Tree Service is available to handle tree inspections, pruning, and safe removals to protect your home and property.
FAQs about dangerous trees
What do you call a dangerous tree?
A dangerous tree is called a “hazard tree” in tree care terms. This term is for any tree likely to fall or drop branches, risking injury or property damage.
What are the 10 examples of trees?
While there are countless tree species, here are 10 common ones:
Common Tree Species
1. Oak
2. Maple
3. Pine
4. Birch
5. Elm
6. Willow
7. Cedar
8. Ash
9. Beech
10. Sycamore
It is key to know that any tree species can turn dangerous in certain situations. The overall structural integrity matters most, regardless of type.
Is the Manchineel tree dangerous?
Yes, the Manchineel tree, also known as la muerte “little apple”, is highly dangerous. Often called “the most dangerous tree in the world,” all its parts have potent toxins. Its sap causes skin burns; eating its fruit can be deadly.
Standing under it in the rain can cause blistering. Rainwater can touch the leaves.
