The answer to 'lawn fertilization installation cost in Illinois' is that the typical range for professional lawn fertilization services in Illinois is generally between $50 to $150 per application, depending on several key factors. The cost can vary based on the size of your lawn, the type and quality of fertilizer used, the complexity of your landscape, and whether any additional services like aeration or overseeding are required.
Many lawn care companies in Illinois offer subscription-based fertilization programs that include multiple applications throughout the year, which can provide a more cost-effective solution. It's important to get quotes from multiple local providers to find the best value for your specific needs.