Dead, Leaning, or Just Ugly: How to Tell If a Tree Needs to Come Down

Signs that matter

A lean that's new, or more pronounced than it used to be, is one of the clearest warning signs, especially after wet weather has softened the ground around the roots. A visible crack or split running down the trunk is another serious one, since it means the tree's structure is already compromised, not just its appearance.

Mushrooms or fungus growing at the base of the trunk usually mean the roots or lower trunk are decaying from the inside, even if the tree still looks green and healthy up top. A trunk that sounds hollow when you knock on it, or that you can see is hollow where bark has come off, means there is much less solid wood holding the tree up than it looks like from outside.

Signs that often don't matter as much

A tree that's simply old, has rough or peeling bark, or isn't growing much new foliage isn't automatically dangerous. Plenty of large, old post oaks in this area look weathered but are structurally sound. Dropping leaves early in a dry year is also usually a stress response, not a sign the tree is about to fail.

The difference between a tree that looks bad and a tree that is actually dangerous usually comes down to the structural signs above: lean, cracks, hollowness, root damage, and dead wood, not general appearance.

Why location still matters even for a healthy-looking tree

A tree with none of the warning signs above can still be a real risk if it's close enough to fall on your house, a power line, or a neighbor's property. In that case, the question isn't whether the tree is unhealthy, it's whether the location makes any failure, even an unlikely one, too costly to risk.

This is why the checker tool on this site weighs both the tree's condition and its distance from your house or the lines. A perfectly healthy tree 10 feet from your roof is a different conversation than the same tree 80 feet away in open yard.

What to do with the answer

If your tree shows none of the serious signs and isn't close to a structure, you probably don't need to do anything right now beyond keeping an eye on it each year, especially after an ice storm. If it shows one or two concerning signs, or sits close to your house, it's worth having a local pro take a look in the next few weeks rather than waiting for the next storm to make the decision for you.

If it shows multiple serious signs, especially combined with being close to your house or a power line, treat it as urgent and get it looked at now, not after the next bad weather rolls through.

What a tree pro checks that you might miss

An arborist or tree pro will usually check the same visible signs you can check yourself, but they also know how to read subtler clues, like whether the soil at the base has a slight mound on one side (a sign the roots are starting to lift), or whether the bark pattern on one side of the trunk looks different from the other, which can point to internal damage that hasn't shown up on the surface yet.

That's part of why the checker tool on this site is meant as a first pass, not a final answer. It will tell you honestly whether what you're seeing points toward normal, worth watching, or urgent, but a tree flagged as watch or urgent should still get an in-person look before you decide what to do.

A note on trees near power lines specifically

If a tree is close enough to fall on a power line, treat that as its own category regardless of how healthy the tree looks. A completely healthy tree can still be hazardous purely because of where it's growing. In that situation, call your electric utility first, since they handle anything involving the line itself, and only bring in a tree pro for the parts of the tree away from the line.