I'm not sure what type of peas those are but if you want to be certain of a winter cover crop of peas I suggest Austrian peas.. I used them last year & they grew well. The only issue I had with them is they didn't form harvestable peas until rather late in spring. I ended up chopping many of them in order to plant the spring crops on time. Which included English peas so there was still peas to eat.
Argue for your limitations and they are yours forever.
permaculture is giving a gift to your future self. After reading this tiny ad:
Sustainable Food Gardens: Myths and Solutions by Robert Kourik