25 Signs Your Tree Could Be Dangerous Before It Falls Trees add shade, beauty and value to your property. They also improve wildlife habitat and help keep your yard cooler during summer. But every tree reaches a point where it becomes unsafe. A dangerous tree rarely falls without warning. Most show signs months or even years before failure. Knowing what to look for helps you protect your family, neighbours, home, vehicles and pets. If you've ever asked yourself, "Is my tree d