Can Epsom Salt kill Crab grass in Central Fl?

Question

I thought I remembered wetting the grass and then applying epsom salt would eliminate crab grass?

Answer 1

Essentially, yes, but it would be the equivalent of giving it too much food. This is a source of magnesium and sulfur for plants, and is used as such.

There are many ways to get rid of grasses in an area. Boiling water and vinegar are two very good remedies for killing grasses.

Boiling water will kill anything on contact, without turning the soil into a toxic mess. This may require multiple applications to kill off remaining grasses and germinated seeds.

Vinegar will kill any plant when sprayed directly onto it. I would avoid getting this in the soil... Just on the blades of grass. This will make the soil temporarily sterile. Nothing will grow here for a few weeks.

Those are just two ways to safely remove grass, but there are many, many more ways. I would recommend saving the epsom salt for feeding the plants, though.