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.

Tree roots can take weeks to years to die, depending on the method you use. Chemical herbicides take the least amount of time—typically between three and four weeks—while homemade methods, like covering an old stump with leaves, could take between seven and eight years. If you’re unsure which method to use or how quickly you need to act, consulting with a pro is always a good idea.

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.

Leaf removal costs between $400 and $1,000 per acre on average. Nationally, the cost of leaf removal averages about $350. Cost factors for this project include lawn size, leaf removal method, tree density, location, and the time required to do the job. If your lawn removal service charges based on lawn size, you can expect to pay $0.02 to $0.10 per square foot.