50-80 day maturity. Vigna unguiculata subsp sesquipedalis. Red Noodle Yard Long Bean Seeds. Non-GMO Warm-Season Annual Heirloom. Red Noodle beans have an unusual purple-red color and are a well-known variety in southern China. The bean pods can grow up to 22" long, do not have strings, and the plant has gorgeous purple-blue flowers. The bean pod loses its red color when cooked. This vigorous plant is heat tolerant and perfect for warm climates. In the Americas, these are mainly grown for their famous black-eyed peas. Approx. 180 seeds per oz.