About Us

TREEangle. Tree Care – Consulting – Forestry.

We care about the personal contact. 

We are a fully insured tree company meaning TREEangle carries a 2 Million CAD liability insurance and full WSIB coverage. 


October 2015

Participant of the FSC FM and COC/CW Lead Auditor Course organized by NEPCon, Jurmala, Latvia

Since May 2013

International Society of Arborist (ISA) certified arborist, Toronto, Ontario

October 2004 to November 2009

M.Sc. in Forest Science at the Albert-Ludwigs-University, Freiburg, Germany

Christoph Lachenmair
Owner of TREEangle

Arborist Christophe Lachenmair pruning a tree.


Since March 2017

Owner of the business TREEangle, Toronto, Canada

February 2011 to February 2017

Arborist and Consultant at Central Tree Care Ltd., Toronto, Canada

August - September 2010, August - October 2012, August October 2013

Camera Assistant in National Geographic produced Wildlife documentaries: Wild Scandinavia - Greenland and America's National Wonders - Alaska, Gates of the Arctic NP

January 2010 to February 2011

Research Assistant at the Institute of Forest Growth, Albert Ludwigs University, Freiburg, Germany.
Working in agro-foresty research projects and on dendrochronology on arctic driftwood.
Participant in an arctic expedition (2 month) to North-East-Greenland with the Karupelv-Valley-Project.


It is our aim to support trees that grow in the surrounding of humans. Pruning is a matter of skill and experience. The goal are healthy, long living and safe trees while considering the species’ characteristics.

It is important to us to work in a team, with joy at work.


“Nothing is holier, nothing is more exemplary than a beautiful, strong tree. When a tree is cut down and reveals its naked death-wound to the sun, one can read its whole history in the luminous, inscribed disk of its trunk: in the rings of its years, its scars, all the struggle, all the suffering, all the sickness, all the happiness and prosperity stand truly written, the narrow years and the luxurious years, the attacks withstood, the storms endured.”

– Herman Hesse, Wandering –

A tidy row of well-maintained cypress trees