Euphorbia species Euphorbias A huge diverse genus, including many which resemble cacti though unrelated. Most succulent types grown here are tender and can suffer damage in moderate freezes and worse in extreme cold. The poinsettia, E. pulcherrima, and the excellent crown of thorns, E. milii and hybrids, are also in the genus. Give good drainage. Their sap is caustic E. pseudocactus
E. trigona E. resinifera
E. ingens
E. tirucalii
E. pulcherrima Ferocactus species Fishook barrel cactus
59
Generally hardy barrel cacti, can grow a few feet high. Grow dry
E. lactea E. caducifolia
E. milii hybrid E. neriifolia