I have seeds that I have collected from my own flowers and also store bought seeds left over. I would like to know the best time to direct sow them so that they will sprout and grow in the spring. Can I sow them now or should I wait until just before the snow flies or wait until after our last frost in the spring? I am in Iowa, Zone 5a. I will be sowing them in my raised beds that are 3 landscape timbers high and are 4' X 8'. Thank you for your help.
