ISU Forestry Extension: www.forestry.iastate.edu
Go to the publications section and refer to numbers F-340, F-366, F-366a and F-366b
International Society of Arboriculture: www.isa-arbor.com
Click “Find a Tree Care Service” below the search bar in the top right corner.
Trees are Good: www.treesaregood.com
Click “Find a Tree Care Service” in the top right corner.
Midwest Chapter of the ISA: www.mwisa.org
Click “Find an ISA Certified Arborist” in the top right corner.
Tree Care Industry Association: www.treecareindustry.org
The “Find a Qualified Tree Care Company” search engine is in the second box on the left hand side of the page.
The following links may help find a certified arborist from out of state, but close enough to perform the required work:
Illinois Arborist Association: www.illinoisarborist.org
Click on “Certified Arborists”, fifth selection on the list on the left side of the page.
Wisconsin Arborist Association: www.waa-isa.org
Click on “Certified Arborists for Hire”, third selection on the list on the left side of the page.