• Dean and Jesse Attend Association Conventions

    American Tree Experts stays updated on the tree care industry in order to provide the best tree care possible. That is why Dean Ziemienski attended the Tree Care Industry Association’s “Winter Management Conference” in Rio Mar, Puerto Rico from February 5 – 9. While there he learned and shared knowledge with industry peers, discussed business solutions, and celebrated […]

  • Winter is an ideal time for tree pruning

    The yard has been raked and tidied up, garden tools have been cleaned and stored, and the lawn mower has been put away; all of the yard work is complete until next spring, right? Not exactly. What many people don’t realize is that the winter is an excellent time to prune trees. Why now? Sometimes, […]

  • Five reasons to take a closer look at your trees this fall

    When temperatures cool and fall finally takes hold in Wisconsin, it is a great time to inspect your trees and shrubs. Here are five reasons why you can use the fall season to help your trees live better, longer lives. Easier to spot signs of trouble. Many diseases will infect trees and shrubs in spring […]

  • “Fall” into planting a tree this time of year

    We all recognize the colorful changing leaves on our trees right now, but did you know these months are also one of the best times to plant a tree? Why now? The sustained period of cooler weather reduces top growth in trees while the warmer soils that don’t dry out due to summer heat stimulate […]

  • High winds topple trees – how to protect against tree failure

    Strong thunderstorms passed through southeast Wisconsin in early June, resulting in numerous service calls for storm damage, including this tree that landed on a home in Waukesha and had to be removed. Tree trunks need strong wood tissue in order to hold up in severe weather. We recommend pruning trees when they are young to […]

  • Emerald Ash Borer is destroying your trees

    Emerald Ash Borer (EAB) is sweeping across Waukesha and Milwaukee counties, killing thousands of ash trees that are a major part of our landscape. Right now, there are 28,000 ash trees on property owned by the City of Milwaukee that are being treated, with thousands more on private properties in need of protection. Once an […]

  • Choosing a suitable replacement

    Sometimes the only course of action is the planned removal and eventual replacement of a dying tree. If and when that time comes, consider these types of disease-resistant replacement trees: The Kentucky Coffeetree Gymnocladus dioicus With a picturesque canopy in the summertime and its coarse textured branches making a bold statement during the winter months, […]

  • Common tree disorders in southeast Wisconsin

    In addition to EAB, there are other potential disorders to be mindful of as it pertains to your trees and shrubs: Magnolia Scale Outbreaks are more common during July and August. Symptoms include white, pink-orange or brown bumps on the branches that later leave behind a chalky substance that has the potential to kill or severely […]

  • Meet Dean Ziemienski

    What is your role at American Tree Experts? I am the vice president and responsible for managing day-to-day operations of our family business. I am also an ISA Certified Arborist, Certified Tree Care Safety Professional and a Certified Pesticide Applicator. Why work in tree care? As a third generation arborist, I am passionate about tree […]

  • Emerald Ash Borer: National catastrophe hits home

    Emerald Ash Borer (EAB) is the most destructive forest insect to ever invade the United States. First identified near Detroit in 2002, this Asian beetle is on an unstoppable march. It is now here in southeast Wisconsin, hitting hard in areas across Waukesha and Milwaukee counties. To date, EAB has killed hundreds of millions of […]