Look for the area where the flower used to be. If it is tan in color and oval with a flat head, it is ready. The seed pod is in two halves. The top of the half will easily come off with either picking it off or sliding it off. Inside will be very small silver or black seeds. Tip the pod over and collect the seeds in a cup, envelope, paper bag or your hand. You can brush them off the pod with your fingers too. They will easy fall out.