u/Aromatic-Drink-8313

My lawn addiction has blossomed this year and I've been trying to level up as quick as possible. I'm already in really deep with trying to get Virginia Buttonweed under control as well as fixing my nutrient deficiencies based on my soil test.

I laid down Celsius WG 14 days ago that severely stressed my St. Augustine lawn but it has started to recover. I'm ready to lay down a micronutrient spray that includes Manganese, Zinc, Copper, Boron and Iron. We are expecting heavy rain in Houston beginning Friday morning (3+ inches projected). Could I lay down this micronutrient spray either this morning or this evening (Wednesday) and it not be "washed" away by the upcoming expected heavy rainfall?

Any help/insight is appreciated!