We can see sisymbrium seeds as hedge mustard in some markets. It is a popular plant in Europe, and they are used to create mustard, a condiment that goes fantastic with many different foods. Impressive enough, raw hedge mustard contains a lot of potassium and magnesium. We can calculate some 230 mg of magnesium for each cup. However, keep in mind that processed hedge mustard (as in mustard pastes) takes out a significant amount of nutrients in the process, so we can’t say mustard pastes are heart-friendly as sisymbrium seeds are.