Are sold per 4.
Price is for 4 pieces.
A hardy plant is one that is adapted in such a way that it is not damaged at temperatures below 0 ° C and thus survives a cold period. This survival does not necessarily apply to the plant as a whole, but after the winter a hardy plant will sprout normally again. Plants that do get damaged or freeze to pieces are called 'soft' or 'semi-hardy' plants. This difference is due to the physiology of the cells. In 'non-hardy' plants, ice crystals form in the cell at temperatures below 0 ° C.