Wachtel Tree Science & Service Inc.Wachtel Tree Science & Service Inc.

Wachtel Tree Science & Service Inc.












Wachtel Tree Science
& Service Inc.


P.O. Box 716
Merton, WI 53056-0716
Fax: (262)538-1412
Phone: (262) 538-1900
E-mail:


Williams Bay /
Lake Geneva:
(262)245-0556

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About Us

Tree People
Click here to check out our experienced staff

Wachtel Tree Science & Service Inc. has been keeping trees healthy and beautiful with the highest quality care since 1935. We utilize the most advanced technology and best practices which enables us to provide outstanding tree care.

How our people set us apart:
We have 3 Board Certified Master Arborists, 14 Certified Arborists and 1 Municipal Specialist on staff (most of any company in Wisconsin).   Twenty of twenty-one Arborists have degrees.   All told we have 4 Associate degrees, 18 Bachelors and 3 Masters.   All together we have a combined experience of 381 years.   Furthermore, we have 4 past-presidents of the Wisconsin Arborist Association on staff.

In 2005 Wachtel employees put in over 1,350 hours improving our tree knowledge and covering safety issues.   As of 6/10/06 we had 2,243 days without a lost time accident.   In the past five years we have received six safety awards from the Wisconsin Landscape Contractors Association, an individual Safety Award from the Tree Care Industry Association and five awards from the Wisconsin Safety Council.

How our work sets us apart:
All of our treatments are based on insect or disease life cycles for proper timing rather than a calendar based cover spray (spray everything) approach.   Our approach limits spraying and preserves beneficial insects by focusing treatments at the time when control of an insect or disease can be most effective.   This is part of an overall approach we use called Plant Health Care (PHC).

This method integrates many different types of management including preventive care, correct cultural practices, pruning, biological, injection, chemical, site modifications and possibly even removal.   Proper pruning, careful removal work and an eye for detail throughout the entire process (even cleanup) are important to our crews.   This is not the easiest way but it is the best.

A testimony to this is the fact that we were presented with The Tree Care Industry's Grand Award for Excellence in Arboriculture in 2002, 2003, 2004 and 2005.   We are the only Wisconsin company to receive this honor.

Summer of 1948

How history sets us apart:
Wachtel Tree Science & Service was founded in 1935 by Larry Wachtel and is the oldest tree care company in Wisconsin.   Larry recognized the importance of professional organizations and commitment to them very early in his professional career.

He was president of the National Arborist Association in 1949, received the Distinguished Service Award from the Wisconsin Arborist Association (WAA) and was an Honorary Life Member of the WAA and the International Society of Arboriculture.   Wachtel Tree Science & Service was instrumental in the formation and advancement of these national and local professional organizations and continues that commitment to this day.

Jean Ferdinandsen, John Gall, Paul Markworth and David Scharfenberger are all past-presidents of the Wisconsin Arborists Association (WAA).   Dave is currently on the Board of Directors of the International Society of Arboriculture (ISA) and the WAA. Paul is currently on the Board of Directors of the WAA and the Society of Commercial Arboriculture. He is also the Tree Care Industry Association's delegate to the ANSI Z-133 Accredited Standards Committee For Arboriculture Operations - Safety Requirements and the ISA's Arborist Certification Liason for Wisconsin.   Tony Arnoldi is a past Board member of the WAA and past Certifications Committee Chair.   Jeff Hagfors is the current WAA Fund Raising Committee Chair while Jean is the WAA's Legislative/Policy Liaison. John Gall currently serves on the Wisconsin Urban Foresty Council.

At Wachtel Tree Science & Service we practice the art and science of tree care.   What sets us apart is quality people, a commitment to training and safety, along with using the newest technology and techniques.   We work to keep your trees healthy and beautiful, while at the same time not forgetting our history and responsibility to care for your trees and the environment.



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