Through research, technology, and education, the International Society of Arboriculture (ISA) promotes the professional practice of arboriculture and fosters a greater worldwide awareness of the benefits of trees.  The ISA also manages to provide the public with valuable tree care information. As a professional green industry organization we strive to develop relationships with other industry groups in order to provide consumers with a wide range of resources.

Our State Chapter of the ISA strives to enhance the quality of life for Indiana residents by encouraging the planting, maintenance and preservation of trees.  We seek to do this by increasing public awareness of the benefits provided by well maintained trees, and promoting the advantages of working with qualified professional arborists who use current industry standards. provides the public with educational information about the benefits of trees and how to properly care for trees in the urban environment. The site contains resources from the International Society of Arboriculture, and also provides a collection of reliable tree care information provided by other industry organizations.

Access information about trees, buy trees online, and learn how you can do more to beautify your landscape.

Arborjet is a premier solutions provider in plant health solutions serving homeowners and arborists.  Part of the Arborjet mission is to develop the most effective formulations and delivery systems in Plant Health Care.

The pesticide section of OISC regulates the distribution and application of pesticides in the State of Indiana, and ensures that individuals who apply pesticides have met minimum competency standards, when required, and apply those pesticides without causing harm to people or property.