is vetch edible
Crown Vetch. Crown Vetch (Securigera Varia) is a plant that is native to parts of Africa, Asia, and Europe, and has been brought to North America. It's often planted along road ways, and used for erosion control, as well as in soil rehabilitation due to it's ability to add nitrogen into the soil.rown Vetch Flower. Crown Vetch is a toxic plant. It's safe to touch, and has a pleasant smell, but the plant and seeds are poisonous if eaten. Crown Vetch can cause vomiting and diarrhea, as well as cause the pulse to drop, and may even cause death if enough is ingested.