Crass Ginger
One of the wild gingers that consistently sails through our winters without a blemish is the shockingly hardy, Asarum crassum. Asarum crassum is endemic to two small uninhabited islands off the south coast of Japan, Ucchima and Ujimukaeshima. Where they grow in the wild, the temperature never freezes, so, why are they so winter hardy? The