Before you trade pills for herbs one needs to understand the cause of their high blood pressure. If your hypertenison is caused by salt sensetiviety then diuretics would asssit you in shedding the salts and lower your blood pressure. Calcuim and potaissium rich foods are very efective at this. But too much potassium can be fatal too so talk with a qualified doc about your decisions first.
if you are looking for natural diuretics look no further then the induction foods lists. asperagus is one as are many other. the horseradish herbs in the whooshie pie recipe is too. PArsely, avacado, spinach, nuts watermellon, dandilions, mushrooms, tomotoes, brocolli, oinions, summer squash, egplant and looseleaf lettuce are all diuretics because of their high potassium values. All meats are high in potassium too.
Here are some chemicals in plants that act as diuretics too.v here is an article on secondary compounds in plants that act as diuretics too and why drying them to teas and such isn't a ggod way to get the chemicals.
http://www.findarticles.com/p/articl..._n8962473/pg_4
Happy low carbing