Q: I am looking for 15-0-15 fertilizer. We had a soil sample done and was told to add this but I am unable to find this anywhere.
A: Look for Centipede/St Augustine fertilizer products. They are sometimes formulated as 15-0-15 or 17-0-17 analyses. Alternatively, buy a lawn fertilizer product with a low middle number, such as 28-1-4 or 28-3-8. Both would be fine to use in your situation at the rate on their labels.