Most tree problems don't happen overnight. They develop over months or years, showing warning signs that a trained eye can spot — and that a homeowner can learn to recognize. Catching problems early is almost always cheaper and safer than dealing with them after a tree fails.

Here are 7 warning signs that a tree on your DFW property needs professional attention.

A few dead branches in a tree's canopy is normal — trees naturally shed branches that aren't getting enough light. But widespread dieback in the upper canopy is a serious warning sign.

What it might mean: Root problems, disease (oak wilt, hypoxylon canker), drought stress, or construction damage to the root system.

What to do: Have the tree assessed by a professional. Widespread canopy dieback often indicates a problem that's been developing for years — the sooner it's diagnosed, the more options you have.

Mushrooms, conks (shelf fungi), or other fungal growth at the base of a tree or on the trunk are a significant warning sign. They indicate internal decay — the tree may look healthy from the outside while being structurally compromised inside.

What it might mean: Heart rot, root rot, or other internal decay. The fungal growth you see is the fruiting body of an organism that has been consuming the tree's internal wood for months or years.

What to do: Have the tree assessed immediately. A tree with significant internal decay can fail without warning, especially during a storm.

Large cracks — especially those that run vertically, through a crotch, or across a major branch — are serious structural defects. They indicate that the tree has already experienced some degree of failure.

What it might mean: Co-dominant stems splitting apart, frost cracks, lightning damage, or structural failure from wind loading.

What to do: Have the tree assessed. Depending on the severity, options include cabling and bracing to support the weak union, or removal if the defect is too severe to correct safely.

A tree that has always leaned slightly is usually fine — it has grown that way and its root system has adapted. But a tree that has started leaning after a storm, after a period of heavy rain, or after nearby construction is a serious warning sign.

What it might mean: Root failure. The root system can no longer anchor the tree, and it may fall at any time.

What to do: Call a professional immediately. A tree with root failure is an emergency — it can fall without warning.

Roots that are lifting out of the soil, or soil that is cracking and heaving near the base of a tree, indicate that the root system is under stress or has partially failed.

What it might mean: Root failure from soil saturation, root rot, or physical damage. In DFW's expansive clay soils, root heave can also indicate that the tree's root system is responding to extreme soil movement.

What to do: Have the tree assessed. Exposed roots are a tripping hazard and may indicate a tree that is at risk of falling.

Healthy bark is relatively uniform in appearance. Watch for:

• Missing bark (cankers): Dead areas where the bark has fallen away, often with discolored wood underneath
• Oozing sap: Bacterial wetwood or other infections can cause sap to ooze from the trunk
• Unusual discoloration: Dark staining, orange powder (rust), or white growth on the bark
• Peeling bark: Some peeling is normal for certain species; extensive peeling on a species that doesn't normally peel is a warning sign

What to do: Document the abnormality with photos and have the tree assessed. Many bark conditions are treatable if caught early.

Leaves that are yellowing, browning, or dropping at the wrong time of year are a sign that something is wrong with the tree's vascular system.

What it might mean: Oak wilt (yellowing with green veins in live oaks), drought stress, root damage, or soil nutrient deficiency.

What to do: For oaks, this is a potential oak wilt emergency — call a professional immediately. For other species, have the tree assessed to determine the cause.

Tree Crew offers free tree health assessments throughout the Dallas–Fort Worth area. If you've noticed any of these warning signs on a tree in your yard, don't wait — early intervention is almost always cheaper and more effective than emergency response.

Call (972) 999-3627 or contact us online to schedule your free assessment. We serve all of Dallas, Fort Worth, Plano, Frisco, McKinney, Garland, Irving, Richardson, Carrollton, Lewisville, Denton, Wylie, Mansfield, and the surrounding DFW area.