Radish Cover Crop, Raphanus sativus 'Radish', is a Daikon radish that not only breaks up tough soil it also kills many soil pests and pathogens such as root knot nematodes. With high levels of glucosinolates that act as natural bio fumigants. Glucosinolates in radishes can “trap sedentary beet cyst nematode and prevent reproduction of this pest that can damage crops.” Our friends at Gardens Alive! have seeds for fall planting. Get free shipping on $50+ (excludes overweight items) code (0177155)