James from Jacksonville, Fl writes
Is this safe for use on St Augustine grass in 90+ degree heat of north Florida?
Helena 19-1-6 is safe for use on St. Augustine grass, however, we would not recommend applying products in temperatures above 80 degrees Fahrenheit. It is recommended that you apply in the early morning or late evening when the temperatures are not as high.
Answer last updated on: 09/06/2017