The Sierra Star Calliandra bush is a hummingbird’s buffet. Beautiful clusters of tubular red-orange flowers are prolifically produced through the warm season. Dark purple fruit follow the flowers which compliments the dark green leaves. In Fall, the leaves turn a copper red color and puts on quite a display! In colder regions of southern Nevada outside of Las Vegas and Laughlin, it could freeze to the ground at 15F. However it should quickly recover in the spring.