7 Warning Signs a Tree in Your Chattanooga Yard Needs to Come Down

Most healthy trees do not need to be removed. Removal is a last resort, and a good arborist will always tell you when pruning, cabling, or watching-and-waiting is an option. But some trees have crossed a line where the smartest move is to take them down before they take themselves down — usually onto something expensive.

Here are the seven warning signs we look for on every estimate in the Chattanooga area.

1. A new or worsening lean

Many trees grow at an angle their whole lives and are perfectly fine. The trees that worry us are the ones that have recently changed. Signs of a fresh lean include cracked or heaved soil on one side of the trunk, exposed roots lifting out of the ground, and the lean being noticeably worse than it was a year ago.

2. Large cracks in the trunk

Vertical seams, splits where two main stems meet, or deep cracks running up and down a major limb are structural failures waiting to happen. A crack is the tree telling you, in advance, exactly where it plans to break.

3. Fungal conks or shelf mushrooms

Mushrooms growing on the trunk, at the base, or out of the roots almost always indicate active internal decay. By the time the fungus is fruiting on the outside, there is often significant rot you cannot see on the inside.

4. Hollow or cavity in the trunk

Some trees live for decades with small cavities. But once a cavity exceeds about 1/3 of the trunk's diameter, the tree's structural reserve is thin enough that a strong wind can snap it. A qualified arborist can sound the trunk and tell you which category yours falls into.

5. Dead limbs in the upper crown

A few dead branches are normal — especially low in the crown where the tree has shaded itself out. But large dead limbs high up, dead sections that span entire scaffolds, or a whole side of the tree dying back are signs of serious decline. Falling deadwood from a tall tree can do real damage.

6. Heavy infestation or disease

In our region, the big ones to watch for are emerald ash borer on ash trees, oak decline on stressed reds and whites, and various canker diseases. A small infestation may be treatable; a tree that's already lost half its canopy to insect damage usually cannot recover.

7. The tree is in the wrong place for what it's become

Sometimes a tree is perfectly healthy but is now growing into the house, lifting a driveway, tangled in primary power lines, or shading out a roof so badly that algae and moisture have become a maintenance problem. Healthy doesn't always mean compatible.

When in doubt, get a second opinion

If a contractor knocks on your door after a storm and tells you a tree “has to come down today,” slow down. Real arborists are happy to explain exactly what they see and why. Removal is permanent, and any honest tree service will give you the reasoning before they bring out the saw.