Homeowners often assume a tree is a problem because it looks unattractive — sparse, oddly shaped, dropping more leaves than usual for the season. Cosmetic concerns and genuine hazards are two different things, and confusing them leads people either to remove trees that were fine, or to leave genuinely dangerous ones standing because they still had green leaves.
The eight signs we take most seriously
1. A sudden or pronounced lean
Some trees grow with a natural lean their whole life and are perfectly stable. A lean that developed suddenly, especially after wind or heavy rain, is a different situation entirely — it often indicates root failure on one side, and can precede a full failure with very little further warning.
2. Fungus or mushrooms at the base or on the trunk
Fungal conks, especially shelf-like growths at the trunk base, frequently indicate internal decay that is not visible from the outside. Different fungi target different parts of the tree's structure, but the general rule holds: visible fungus on a mature tree warrants a professional look at what is happening underneath the bark.
3. Large dead limbs in the upper canopy
Isolated dead branches are normal on almost any mature tree and often just need routine deadwooding. Large dead limbs, especially several of them concentrated in the upper canopy, suggest a more significant decline and deserve a closer look at the tree overall.
4. Cracks running down the trunk
A vertical crack, especially one that runs a significant portion of the trunk's length, is a serious structural concern. It indicates the wood fibers have already begun to separate, and the crack typically worsens over time rather than healing.
5. A hollow sound when tapped
Tapping the trunk with a mallet or the back of an axe and listening for a hollow versus solid sound is a rough but genuinely useful field test for internal decay. It is not definitive on its own, but combined with other signs it is one more data point toward a removal recommendation.
6. Root damage or a lifted root plate
Construction work, soil compaction from heavy equipment, or a visibly lifted root plate on one side of the trunk all indicate compromised root support. A tree with significant root damage can look completely normal above ground while being structurally unstable below it.
7. Included bark at a major limb union
This is where two limbs or trunks grow together with bark trapped between them rather than forming a strong outer union — a hidden weak point that is not always obvious without a trained eye. It is exactly the kind of structural issue cabling is designed to address on a tree that is otherwise worth keeping.
8. Repeated limb failure in calm weather
A tree that drops large limbs without an obvious weather trigger is telling you something is wrong internally. One dropped limb after a storm is normal; repeated failures with no clear external cause are not.
What to do if you spot these signs
Call for an assessment rather than trying to diagnose it yourself from the ground. We check all eight of these during any estimate involving a tree showing signs of decline, and we will tell you plainly whether the answer is removal, trimming, or nothing at all. A tree with real years left in it deserves better than a nervous removal based on incomplete information.
When it genuinely cannot wait
A sudden lean toward a structure, a large crack that has visibly worsened, or a root plate that has lifted are all situations we treat as urgent rather than something to schedule routinely. If you are seeing any of those specifically, call our emergency line rather than waiting for a standard estimate window.