Succulent of great visual impact, not present in nature but obtained in the nursery from the crossing between species of two different genera (as the name suggests), Sedum morganianum and Echeveria derenbergii. The exemplar shows similar characteristics to both parents, differing however especially as regards the dimensions of the compact rosettes, much bigger, thick and robust of the genus Sedum. Just this extreme resistance, combined with the pleasantly drooping shape, has contributed to make the plant known with the common name of "super donkey tail". The leaves are very fleshy, cylindrical and strongly pointed, stacked in a thick and precise way along the prostrate stems, a feature that makes Harry Butterfield, perfect for adorning shelves or hanging vases. The epidermis takes on delicate mint green tones, opaque and pleasantly shaded with pinkish when exposed to the sun. Its ornamental aspect is accentuated when at the apex of the long "tails" pretty tubular flowers bloom on the notes of yellow-orange.