Yes, cutting a tree's roots can cause it to fall, particularly if major support roots are severed. In extreme cases, trimming roots can affect the tree's structure and stability. Many crucial roots are located just below the soil's surface. If you make severe cuts to roots more than 2 inches in diameter, you risk impacting the tree's water flow and its ability to withstand severe winds or storms. Even cutting roots less than half an inch in diameter under or outside the tree's canopy can cut off its water supply, causing it to decline, die, and eventually topple.

Licensing requirements for arborists, also known as tree surgeons, vary by state and municipality. Many areas require a license, which often involves specialized education and experience. Even if not mandated, it's wise to hire a licensed professional as they tend to have more experience. Beyond licensing, look for certifications from organizations like the International Society of Arboriculture (ISA) or the Tree Care Industry Association (TCIA), as this indicates a higher level of expertise. Certified arborists must typically pass a comprehensive exam. Always confirm that the arborist has a business license and is fully insured to protect yourself from liability. Seeking positive recommendations from local homeowners is also a good step in finding a qualified professional.

There are a few instances in which removing a tree is the best option. You might do this if the tree looks to be a major danger—potentially falling onto your home, your car, or other parts of your property—or it’s diseased beyond repair. A tree that is growing too close to your house might need to be removed to prevent mold growth.

You don’t always need a permit to grind a stump, but you might need one depending on your location and the stump’s surroundings. Permits are often needed if the stump is part of a protected tree species, near public areas or utility lines, or close to environmentally sensitive zones like wetlands. Some cities also regulate noise and work hours. Always check local rules before grinding, and contact your city or county office if you're unsure.