Whistler Winter Peas Whistler Winter Peas, released by Progene Research of Washington, are a semi-leafless, white flowered pea with yellow cotyledons. Winter hardy down to 0F, Whistler winter peas are a great addition to satisfy your winter forage needs. Nitrogen! Peas are excellent for nitrogen fixation. Pea seed, properly inoculated with Rhizobium bacteria at planting time, does an excellent job of fixing nitrogen from the air. The bacteria takes nitrogen, binds it with hydrogen from soil water, and forms ammonium, which is a form that is by plants. This nitrogen fixation makes peas a perfect partner with cereals and grasses, which use large amounts of nitrogen, as well as banking nitrogen for future crops through cover cropping and green manure plowdown.
