I fired TruGreen because the ended up killing my grass rather than making it
beautiful.

I want to do this myself and bought a broadcast speader and a bag of weed 'n
feed.

The instructions tell me how to apply it, but not the frequency or WHEN.

So I ask:

When do I apply this ( I live in San Antonio, Tx, and have St. Augustine
grass)
And
How frequently do I do it?

Thanks

ER