Sliced, torn stalks Published May 21, 2014 at 1500 × 1000 in Japanese Knotweed Identification and Juicing Japanese knotweed stalks, cut lengthwise, and ready for juice making. Facebook0Pinterest0TwitterGoogleLinkedin0Reddit0DiggitStumbleupon0Tumblr0 Japanese knotweed stalks, cut lengthwise, and ready for juice making.