It's well-known that trees growing too close to a house can pose a threat to its roof, but what many homeowners don't consider is that trees can be hazardous for their underground pipes as well.
As a tree grows, its root system expands. Over time, it can potentially become entangled with water or sewer pipes underground. However, many trees have particularly aggressive roots which can make their way into pipes surprisingly quickly. If a tree's roots do damage important pipes, it's going to be very costly to fix. Here are some of the most important trees to avoid: