Ever gone by a tree on your property and thought to yourself, “Should I be concerned about that?” and then rationalized the thought away? You’re not alone, and that instinct is worth trusting. The majority of tree failures do not occur suddenly. They provide “warning signs” initially, and often for months, and those that appear to have come “out of the blue” typically had signals that no one knew to look out for.
It’s the stakes in a city like New York that’s the tricky part. A tree failing in an open field is a non-event. A tree failing on a dense Bronx or Queens block can crush a parked car, take down a power line, block a fire route, or land on an attached home in seconds. That’s the difference between a routine removal you schedule for next month and an emergency you need handled today.
So how do you tell them apart? There are 10 solid indicators that a tree is in need of emergency removal.
First: What Makes a Tree an Emergency vs. a “Deal With It Soon”?
Not all sick trees pose an emergency. Arborists compare two factors: the risk of the tree falling, and if the tree falls what it will strike (the “target”). If a tree is not growing anything below it and is not causing any damage, it may be able to wait until it is scheduled for removal. A leaning tree over your neighbour’s roof or in a sidewalk or power lines is a real emergency.
As a general guideline: If the fall is imminent and there is someone or something of value in the fall zone, do not hesitate. Here’s what to look for.
The 10 Warning Signs
1. A Sudden or Worsening Lean
If a tree has been growing in an inclined position it is likely stable. The danger sign is a new lean, or one that is clearly growing over time particularly following a storm or heavy rain. A fresh lean is an indication that the root system or trunk is not supporting the tree. If it is leaning towards a house, driveway, or street then treat it as urgent.
2. Cracked, Heaving, or Lifting Soil at the Base
Inspect the soil near the base of the tree. When the soil is cracked, a pile of uplifted soil, or a hole opened on one side, it often indicates that the root plate is coming out of the soil. This is a common symptom following saturated soil conditions, and is a clear indication that a tree is in its early stages of uprooting.
3. Deep Cracks or Splits in the Trunk
Vertical cracks, deep seams, or a visible split in the main trunk are structural failures in progress. They are particularly hazardous near the trunk’s base or when there are two cracks on opposite sides of the trunk, which may be a sign of severe injury to the interior and/or root systems. The cracks are the places in the tree that are weak and are subjected to stress from wind.
4. Large Dead or Hanging Branches (“Widow-Makers”)
Even on a windless and calm day a broken limb can fall from the canopy, which is why arborists refer to them as widow-makers. Dead branches more than about 4″ thick perched over a driveway, walkway, entrance or play area, are hazards to be dealt with before the next storm, not after.
5. More Than Half the Canopy Is Dead or Bare
A few small dead twigs are not a problem. However once a quarter or more of the crown is dead (and definitely half or more of the branches are bare during the growing season) the tree is in steep decline. If there is widespread dead wood, you are likely to have more serious root or trunk issues and if a tree has reached this stage, it will be unpredictable in wind.
6. Mushrooms, Conks, or Fungal Growth on the Trunk or Base
If there are shelf-like fungi (conks), mushrooms coming out of the base of the tree, or fungi growing on the trunk, it means that the tree could have internal decay. The fungus has usually removed much of the wood within by the time the fruiting body shows on the outside. One of these trees may be structurally compromised due to decay and stand for years, or it may snap under adverse loading conditions.
7. A Hollow or Soft, Crumbling Trunk
Knock on the trunk or find soft, punky wood. The trunk is very weak from a high degree of hollowness. Although not all hollow trees are destined to fail, the risk of failure is high when a large cavity is present with any of the following signs on this list.
8. Storm Damage Split Limbs, Torn Bark, or a Tree Resting on Something
Walk your property after major NYC storms. Fresh fractures, large trees that are broken, a limb hanging in the canopy, stripped bark, or a tree leaning on a fence, wall or roof are all indicators of loss of integrity. Even a tree that is in good condition can be pushed over its limit by storms, and the tree’s instability may not be easily visible from a distance, so don’t get too close to inspect it.
9. The Tree Is Touching or Threatening Power Lines
Expect to see this everytime, it is a NYC classic and always an emergency! An energized tree, caused by touching an overhead electrical line can start a fire or cause a power outage. Never attempt to trim or clear this yourself, and don’t touch the tree energized wood and downed lines can be deadly.
10. It’s Blocking a Driveway, Sidewalk, Fire Escape, or Roadway
Even if a tree is not visually dramatic, if it is blocking access to a driveway you cannot drive on, a sidewalk where pedestrians are crossing the street to avoid it, or anything blocking an emergency route, then it’s an emergency. A block of access in a congested city is an issue, is a safety concern and should be cleaned up quickly.
Warning Signs Often Compound
The presence of any one sign may only indicate the need for a professional evaluation. These dangers add up; a cracked tree that has some obvious decay, plus root heaving, is much more dangerous than each of these risks individually. When you see more than one red flag on one tree, particularly on a tree near a target, that’s the time to call a professional.
Who to Call in NYC When It Can’t Wait
New York City has specific rules about which tree is whose responsibility, and calling the right place saves critical time:
- Downed or contacted power lines: Call 911 immediately, then Con Edison (the Bronx and most of NYC’s electric utility). Stay well back and keep others away; never approach a line-entangled tree.
- A city-owned street tree (in the strip between the curb and your property line): Call 311 or use the NYC 311 portal to report it. NYC Parks Forestry inspects and prioritizes genuine emergencies a tree split at the trunk, a large hanging limb, or one leaning into a building often within days. Street trees cannot legally be removed or cut by the public.
- A tree in your backyard: The city will NOT take it down it is your responsibility as the homeowner. This is where you need a licensed, insured tree service, especially one that is able to respond to emergencies.
What to Do Right Now If You Spot an Emergency
- Do not allow people or animals access to the fall zone or under any overhanging limbs.
- Don’t try to fix it yourself. Unstable wood is where things can go wrong when it comes to DIY.
- Call 911 and Con Edison first, if lines are involved before anyone else.
- Document it photos help insurance if tree damages a covered structure.
- Contact a licensed tree removal service for trees on your property or if they are imminent danger.
Don’t Wait for the Storm to Decide for You
Here’s the pattern the pros see over and over: most emergency removals happen because a warning sign got ignored until a storm finished the job. It is almost always safer, simpler and cheaper to have it removed proactively during a calm day than it is in the middle of a pouring rain and much less likely to result in damage to the property.
Don’t sit on a tree that you notice one or more of these signs on. Licensed, insured crews, familiar with the safety of working on the small lots, attached homes and overhead wires of the NYC area, DJ’s Tree Removal Service offers fast, professional tree assessments and emergency removals. Because a small warning sign can be a big problem, call for an evaluation before it’s too late.