9 Warning Signs a Tree Near Your House Could Be Dangerous

Central Massachusetts gets nor’easters, summer thunderstorms, and heavy, wet snow and ice, and every one of them tests the trees around your house. Most trees handle it fine. But a weakened tree near a house, driveway or power line can do serious damage when it fails. Here are nine signs worth taking seriously.

1. A new or worsening lean

Many trees grow with a slight lean and are perfectly stable. Worry when a lean is new or getting worse, especially if the soil on the opposite side is cracked or lifting. That can mean the roots are letting go.

2. Cracks or splits in the trunk

Deep vertical cracks, or a split where two large stems meet, are a major weak point. Trees with two co-dominant trunks forming a tight “V” are especially prone to splitting in storms.

3. Dead branches, especially large ones

Dead limbs, often called “widowmakers”, can fall without warning, on a calm day or in the first gust of a storm. Leafless branches in summer are the easiest to spot.

4. Mushrooms or fungus at the base

Fungus growing on the trunk or roots usually means decay inside. A tree can look healthy above while rotting where it matters most.

5. Hollow or soft areas

Cavities, soft wood, or bark that’s falling away in patches all point to internal decay.

6. Root damage

Roots cut by trenching, driveway work or a new foundation can weaken a tree for years after the work is done. So can soil piled up around the trunk.

7. Thinning or browning canopy

If a tree leafs out sparsely, drops leaves early, or has whole sections dying back, it’s under stress, from disease, insects, drought or root problems.

8. Insect damage

Holes in the bark, sawdust at the base, or tunnels under loose bark are warning signs. In Worcester County, round dime-sized exit holes in maples should be reported: read our Asian longhorned beetle guide.

9. Branches over the roof or touching wires

Even a healthy tree is a risk when big limbs hang over the house or rub on lines. For lines on the street side, call the utility; never touch branches in contact with a wire.

What to do next

• One sign, minor: keep an eye on it and recheck after big storms.
• Several signs, or any sign on a big tree near the house: have a tree crew look at it. Often trimming is enough; sometimes removal is the safer choice.
• A tree already on the house, car or wires: see emergency tree service and stay clear.