Peas and oats can be spring or fall planted. I am assuming you are speaking towards a spring planting. As soon as possible for you now Boone, probably should have had them in already, many guys plant them as early as the end of April. If you are going to do it, do not wait any longer. If you were waiting for the danger of frost to pass, I think you are totally good now, but keep in mind both young peas and young oats can survive early frosts as long as the temp stays above about 24 degrees, so don't worry too much about planting them earlier next time. What type of peas are you planting? 4010 field peas would be a good choice for you right now.