Sempervivum × giuseppii

Sempervivum × giuseppii, the roof houseleek, is a naturally occurring hybrid species of flowering plant in the family Crassulaceae, native to northwest Spain.^[1][2] Its parents are Sempervivum arachnoideum and Sempervivum cantabricum.^[3] A succulent, cold-hardy to USDA zone 7, it has gained the Royal Horticultural Society's Award of Garden Merit.^[4]

Sempervivum × giuseppii
Habit
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Saxifragales
Family:	Crassulaceae
Genus:	Sempervivum
Species:	S. × giuseppii
Binomial name
Sempervivum × giuseppii Wale