Tree Service
New Berlin
Wisconsin 53146
American Tree Experts was founded in 1950 by Chester Ziemienski, who had a passion for providing care to the trees that surround our neighborhoods. After graduating with a degree in forestry, Chester saw a need for a professional tree care provider and City Tree Service was founded. Later renamed to American Tree Experts, the business was sold 30 years later to Chester’s oldest son, Jesse Ziemienski, who is the current President of American Tree Experts. Jesse’s son, Dean Ziemienski, joined the company in 2007 and has since become Vice President.