Thanks everybody! Your comments are helpful. It sounds like I can incorporate a thin layer of coffee grounds right on the top of the garden. I also have oodles of not fully decomposed leaves that I can use as mulch as well.....I'm going to have a great garden this year!!!
Ok, another question: for the first time, I planted a cover crop last fall on my veggie garden. It was a mix of seeds, but only one grass like plant has come up. When do I turn it under into the soil? It is still too wet here to plant anything. Do I just let it grow until I am ready to use the beds or do I turn it under now so it can decompose?