Check the Trunk First
The trunk holds everything up. If it's compromised, the whole tree is compromised.
Cavities and hollows: An open hole in the trunk means decay inside. Some Elm trees develop hollows naturally and can handle it — up to a point. When a cavity extends through more than a third of the trunk's cross-section, you've lost a lot of structural strength.
Vertical cracks: Long splits running down the bark suggest internal forces trying to pull the trunk apart. You'll often see these where two main stems join — co-dominant stems with included bark, which is one of the weakest structures a tree can have.
Bulges on one side: Could be internal decay, reaction wood (the tree trying to reinforce a weak spot), or a previous failure that's healed over on the surface but is still broken underneath.
Mushrooms or bracket fungi growing on the trunk: This isn't cosmetic. The fungus is digesting wood inside the tree. Some fungi cause rapid soft rot that destroys strength quickly. Others cause a slower brown rot. Either way, it needs assessment.
What the Canopy Is Telling You
Look up. The crown gives away a lot about what's going on.
Dead branches: The obvious one. Dead wood is brittle and unpredictable — it drops without warning on calm days. A tree with a lot of deadwood in the upper canopy is a genuine hazard, especially if it's hanging over areas where people walk, park, or sit.
Canopy thinning: If one section of the crown is going sparse while the rest looks fine, there's likely a problem on that side — root damage, vascular disease, or decay in a main branch.
Dense tufts of new shoots on the trunk: This is epicormic growth — the tree's emergency response to canopy loss. It means the tree is stressed and trying to compensate. Confusingly, the same thing happens after bad lopping jobs, so it takes experience to read correctly.
Hanging branches: Partially broken branches still dangling in the canopy — arborists call them "widow-makers" for good reason. They can come down at any time. Don't walk under them.
Branches rubbing together: Where branches cross and rub, they create open wounds. Decay gets in through the wound, and both branches weaken over time.
Problems Below Ground
Root issues are the hardest to spot and often the most dangerous.
Ground heaving on one side of the tree: If the soil has lifted up near the base, the root plate is moving. The tree could go over at any time. After heavy rain in Orange, saturated soil makes this even more likely.
Exposed roots: Major roots above ground — from erosion, excavation, or foot traffic — are vulnerable to being cut or damaged. Lose a major root and you lose a critical anchor.
Cracks in the soil around the base: Circular cracks around a leaning tree mean the root plate is rotating out of the ground. This is an emergency. Stay well clear.
Fungi around the base: Mushrooms growing in a ring around the trunk indicate root decay. The tree can look perfectly healthy above ground while its anchor system is rotting underneath.
Recent construction nearby: Trenching, excavation, paving, or soil compaction within the root zone (which extends well past the canopy edge) can silently wreck a tree's stability. You might not see symptoms for 6 to 24 months — but the damage is already done.
Context Matters as Much as Condition
A defective tree isn't automatically dangerous. It depends on what's around it.
What's in the fall zone? A dodgy tree in the middle of a paddock is low risk. The same tree next to your house, over your driveway, or beside the kids' play equipment in Bloomfield — that's high risk. Across Orange's suburban areas, most trees are within striking distance of something valuable.
Has the tree lost its shelter? When neighbouring trees get removed, the ones left standing are suddenly exposed to wind they've never had to deal with. This is extremely common on development sites around Central Tablelands. The remaining trees weren't built to handle that exposure.
Soil type: Clay soils that shrink when dry and swell when wet put chronic stress on root systems. Sandy soil gives less grip. Waterlogged ground dramatically reduces root strength. Orange has all of these across different suburbs.
Past damage: A tree that's been topped, hit by lightning, been through a fire, or had termites carries a higher baseline risk than one that's had an easy life.
What to Do If Something Looks Wrong
Don't try to fix it yourself. Don't climb the tree. Don't start cutting branches. Don't try to prop it up with timber.
Keep everyone away from the drop zone — at least one and a half times the tree's height in every direction.
Call a qualified arborist. If it looks like the tree is actively moving, cracking, or leaning worse than yesterday, call our emergency line.
Take photos from a safe distance. Get close-ups of the defects and wider shots showing the tree in relation to buildings, fences, and anything else it could hit.
Let your insurer know if it looks like damage is likely.
We cover all areas of Orange — Bloomfield, Calare, Glenroi, Lucknow, Spring Hill, Clifton Grove, Nashdale, Borenore. Standard inspections can usually be booked within a few days. For urgent situations, we'll get someone there the same day.
Frequently Asked Questions
Is a leaning tree always dangerous?
Not always. Some trees just grow at an angle — that's normal for them. But if the lean has increased recently, or if the ground around the base is cracking or lifting, get it looked at straight away.
Can a tree look healthy and still be dangerous?
Absolutely. Some of the most dangerous trees we assess look green and full from the outside. Internal decay, hidden root damage, and structural defects don't always show on the surface. That's exactly why professional assessment matters.