Read the manufacturers label. There is a very short window for proper application. Apply it too early and it just gets washed away. Applying it anytime in Texas may be fine and dandy - for Texas, but in other parts of the world you want to follow the manufacturers instructions or you may as well just burn your money and spread the ash on your lawn - it will be just about as effective!

And FWIW, I think New Jersey weather is more similar to Canadian weather than Texas weather !!!