GCI Turf Ca (Calcium) 1-0-1

Use this in my monthly application

First class customer service and awesome products.

I can’t tell a difference when applied (why I only gave it 4 stars) but I trust the science behind it. Since the lawn care guide calls for it, I put it down. The results of using the guide speaks for itself! My lawn has gotten so much better since I started using it last year!