You can identify root problems by watching for four main warning signs around your trees. A sudden lean that wasn't there before points to root failure. Mushrooms growing near the trunk base signal decay below ground. Heaving soil on one side of the tree shows roots are lifting. Exposed roots that look soft or dark have started to rot.
I spotted these signs on a client's oak and called for an arborist right away. The trunk base showed bracket fungi and the soil had lifted on one side by about 10cm. We removed that tree within a week and found the main roots had turned to mush inside. If we had waited, it would have fallen on her garage during the next storm.
Another case went the other way because we caught the problem too late. A neighbor noticed mushrooms around his maple but waited two months to call me. By then the tree had started leaning toward his house. It fell during a wind storm before the removal crew could get there. Early action would have saved him thousands in damage.
Your tree root damage signs show up in the canopy before you see anything at ground level. Leaves that yellow or drop early on one side of the tree point to root death below that area. Dead branches that appear for no clear reason suggest roots can't supply enough water. A thin crown with fewer leaves each year means the root system is shrinking.
Trees become unstable when too much of the root system fails at once. University of Florida research shows decay in more than one-third of support roots makes a tree unsafe. You can't see this damage from above ground until it gets severe. By then the tree may fall without warning during normal weather conditions.
The critical zone extends 1.5 meters (5 feet) from the trunk where the main structural roots anchor your tree. Damage in this zone matters most for stability and health. Roots further out feed the tree but don't hold it upright. Focus your inspections on this inner zone where problems cause the biggest risks.
Look for root decay symptoms near the trunk base during your checks. Fungal fruiting bodies like mushrooms or bracket fungi mean decay has spread inside the roots. Soft spots in exposed roots that give when you press them have started to rot. Bark that peels off from root flares points to damage below. Dark staining or oozing sap signals infection.
Your hazardous tree roots need a pro to assess when you spot any warning signs. A certified arborist can probe the soil and test root soundness with special tools. They may order a full risk assessment if the tree sits near buildings or walkways. Some problems can be fixed with cables and bracing while others require removal.
Call for emergency service right away in certain danger cases on your property. A tree that starts leaning after a storm may fall within hours. Soil that cracks and lifts around the trunk means roots are tearing loose. Any tree over your house, car, or play area needs fast action. Don't wait to see what happens when the stakes are this high.
Read the full article: 7 Essential Facts About Tree Root Systems
