Does anyone have experience growing austrian winter field peas in zone 6 and if so are they likely to survive planting in late Feb or early March? After running out available garden space, I've cleared a section next to my house that hasn't been used as a garden in 20 years. I try to grow organic, but i've already used up all my composted chicken manure in my main plot so I'm planning on using the austrian field peas as green manure. I intend to use this section to plant flour corn. Would planting the peas in early march give enough time for the legumes to add nitrogen before i plowed it up in early May? The only cover crop i've used before is hairy vetch and this would be my first experience using austrian winter peas.