Last year I planted Walla Walla onions using started plants from Gurney's. They did well and I want to do more this year to try at our farmers market. A bit pricey to go with plants so I want to start my own from seed. I have slightly less than zero idea of how to go about it. Our average date of last frost is mid-May. From my reading it seems I can set them out a bit earlier than that and be safe. Anyone here have experience with growing onions from seed? I'll be gratefull for any and all advice.