I started my seeds Jan20, in eggshells, and up potted a week ago. Seeds for aboveground can start Feb 16, but I dont know in March. I lost my calendar schedule and need to find it. Wish I had started them in Dec, but too much xtra lighting. These go outdoors at 60* and above, indoors at 55*.
Trying Opalka (gold marked pots,) and PrudensPurple ( green marked pots) some of the square tubs are amaranth. (Cherry Vanilla and Brightest Brilliant). Too many are surviving, but its early yet.