Well, I got my peas in on the day after St Pat's Day. Not too bad. The soil in this area of my garden is really warm. Its right up against the south face of the house and gets full sun all day long, all winter. I'll have to take my soil thermometer out there soon, just out of curiosity.
My raised beds, which are further from the house and shaded by a neighboring house 24/7 during the winter, are still mostly frozen. Last year I had to wait 'til April to plant there.
I'm not well prepared for planting yet. I have no row labels. And I am going to order pea netting, but haven't done so yet. So I used sticks and poles and old labels to mark out rows. I'll remember what I planted where until I get the labels in. I used a zig-zag pattern for planting, but only planted some of the zigs. I'll succession plant every few weeks.
I used Pea, Lentil, and Vetch Inoculant from Johnny's that's for garden peas, field peas, fava/broad beans, and vetch (whatever that is). I just sprinkle it on the scattered peas in a trench than cover it over. I did the same last year and it gave me great yields - much better than previous years when I did not use inoculant. (Here's an old post of mine with inoculant information.)