Seven Signs a Tree Needs to Be Removed

Removal is a last resort, not a default

A mature shade tree in North Texas is worth thousands of dollars in cooling, stormwater absorption and property value, and it cannot be replaced within a decade. Removing one should require a real reason. These are the reasons.

1. More than half the canopy is dead

A tree that has lost most of its leaf area cannot feed itself back to health. Under about 25 percent dieback, treat the cause. Over 50 percent, and especially if it is progressing year over year, the tree is on a one-way path.

2. Fungal conks or mushrooms at the base

Shelf fungus at the root collar means established internal decay in the part of the tree that holds it up. Fruiting bodies are the last stage, not the first — by the time you can see them, the structural loss inside is usually substantial.

3. A new lean, or soil heaving on one side

A tree that has always leaned is generally fine; it has grown reaction wood to compensate. A tree that started leaning, or has cracked, mounded soil lifting on the opposite side of the trunk, is failing at the root plate right now. This is the one genuine same-day emergency on the list.

4. A split trunk or a cracked union

A visible vertical crack through a union, or two co-dominant stems separating with bark trapped between them, is a tree waiting for a wind event. Sometimes cabling buys years. Once the crack extends into the trunk, it does not.

5. Hypoxylon canker on an oak

Bark sloughing off in patches to reveal a grey-brown crust. The fungus is opportunistic on drought-stressed trees, it decays the sapwood quickly, and affected trees can fail without much warning. Over a house or drive, this justifies removal.

6. Confirmed oak wilt in a red oak

A red oak with confirmed oak wilt will die, and while it does it produces fungal mats that spread the disease to every oak around it. Removal here is partly about the tree and mostly about the neighbourhood.

7. It is structurally wrong for where it stands

A silver maple three feet from a foundation. A Bradford pear at the age where they reliably split. A cottonwood over a bedroom. Some trees are healthy and still the wrong tree in the wrong place, and no amount of pruning fixes the geometry.

Four things that usually do NOT mean removal

• Deadwood in the canopy. Normal on mature trees. That is a crown cleaning, not a removal.
• Yellow leaves. Usually iron chlorosis — a soil chemistry problem with a straightforward fix.
• Roots at the surface. Normal in shallow North Texas soil. Mulch over them; do not cut them.
• It is close to the house. Proximity alone is not risk. A sound tree near a structure is a shade asset.

Get a second opinion before you spend

A meaningful share of the trees we are called to remove do not need removing. If someone has quoted you four figures, a free certified arborist assessment is worth an hour of your time.