How Can You Tell if a Tree Is Dangerous and Needs Removal?

A tree is likely dangerous and may need removal if it shows any of these signs: a new or worsening lean, especially with soil heaving or roots lifting; large dead limbs or a dead crown; deep cracks, splits, or a hollow cavity in the trunk; mushrooms or fungus growing at the base or on the trunk; or visible root damage and decay. Any one of these, particularly on a large tree near your house, driveway, or the lines along your street, is reason to have it assessed by a licensed crew. A tree that has already partially failed in a storm should be treated as an immediate hazard and not approached.

You do not need to be an arborist to spot most danger signs. This guide walks through what to look for, what each sign tends to mean, and when it is time to call. When in doubt, it is always safer to have a tree looked at than to wait for it to come down on its own.

Warning signs in the trunk

The trunk is the tree's main support, so problems here are the most serious:

• Deep cracks or splits running up the main stem, especially where the trunk forks. A split trunk can fail suddenly under wind or its own weight.
• A large cavity or hollow in the trunk. Some hollowing can be tolerated, but a large cavity weakens the tree's core.
• Mushrooms, conks, or shelf fungus on the trunk or at the base. Fungus is often a sign of internal decay you cannot see directly.
• Bark falling away in large patches or areas of dead, missing bark, which can indicate the wood beneath is dying.

Trunk problems usually point toward removal rather than pruning, because you cannot prune away a failing core.

Warning signs in the canopy and limbs

Look up into the tree, ideally in full leaf during the growing season:

• Large dead limbs or a noticeably dead section of the crown. Dead limbs can drop without warning.
• A thinning or dying crown while neighboring trees leaf out fully, which can signal overall decline.
• Hanging or broken branches caught in the canopy after a storm. These can fall at any time.
• Branches growing into power lines or hard against your roof, which is both a hazard and a job for professionals.

Limb-only problems on an otherwise healthy tree can sometimes be solved with trimming and pruning. Widespread canopy death points toward removal.

Warning signs in the lean and roots

The base of the tree tells you a lot about its stability:

• A new or worsening lean, especially toward your house. A lean that has appeared or increased recently is far more concerning than an old, stable one.
• Soil heaving or cracking on one side of the base, or roots visibly lifting out of the ground. This can mean the root plate is starting to fail.
• Damaged, cut, or decaying roots, often from nearby construction, trenching, or soil compaction. Roots you cannot see do the work of holding the tree up.
• Fungus or mushrooms in the root zone, which can indicate root rot.

A leaning tree with lifting roots is one of the more urgent situations and should be assessed quickly.

Storm risk in Bowie

Bowie's tall, mature trees combined with summer thunderstorms, winter ice, and high winds make storm-related tree failures a recurring problem here. With canopy in the area averaging close to 58 feet, a compromised large tree has a long way to fall and a lot of weight behind it. Before storm season, it is worth scanning your trees for the signs above, because the time to address a hazard is before the wind finds it, not after. If a tree has already failed or is hung up under tension, treat it as an emergency: see our emergency and storm damage page and keep clear of any downed lines.

What to do if you see these signs

1. Keep your distance, especially from a leaning tree, a hung-up limb, or anything touching a power line.
2. Do not try to cut a tree under tension or one that has partially fallen. It can move suddenly.
3. Take photos from a safe distance so a crew can assess before arriving.
4. Call a licensed, insured tree service for an evaluation. A trained eye can tell a real hazard from a tree that just looks rough.

Not every imperfect tree needs to come down. A licensed crew can often tell you a tree is fine, or that pruning will handle it, which saves you the cost and loss of a removal you did not need.

Get your tree assessed

If a tree on your property is showing any of these warning signs, call with your address and a description, or send photos, and we will tell you what we see. For a large tree near your home, we will take a short on-site look so the read is accurate. See our services, the cost guide, or contact us.