24 degrees was the limit for the favas (too cold for me to be out too) But they appear to be in a state of suspended animation somehow/ and if we would only get a few warm days, they would spring into life again. I sent some tincture to Ken Allan in Canada to test and he decided that in two drops of tincture, there is approx 1 mg levadopa. (he may try to experiment with a tincture next summer, too). I am feeling good...taking the tincture 3 times a day usually. Getting my seed catalogue order ready for more beans to plant the end of Feb. here in TN. Will keep you posted on our progress . Aunt Bean