The Sedeverias are intergeneric hybrids made from a cross between a Sedum sp. and an Echeveria sp. The crested form here described is of unknown parentage. It is a branching succulent which produces many nice crested stems from the base and seems to to change in and out of its crested mode during the years. X Sedeveria 'Blue Elf is a succulent plant that forms beautiful rosettes of blue-green leaves with a thick coating of powdery farina. The leaf tips can blush pink to burgundy, with the brightest colors showing when moderate stressed from direct sun, water shortage, or cold temperatures. What gives this hybrid its common name, "Harru Plant," are its beautiful bright yellow flowers that appear multiple times a year.