Founded in 1975, Winkler Tree & Lawn Care has grown to be one of the largest comprehensive tree and lawn care companies in the Chicagoland area. In addition to being Illinois' first nationally accredited tree care company by the Tree Care Industry Association (TCIA), we are a member of both the International Society of Arboriculture (ISA) and the Society of Commercial Arboriculture (SCA). Additionally, our staff includes six ISA-certified arborists with over 100 years of cumulative experience!