The Bottle Brush tree (Callistemon), belongs to the Myrtaceae family. Bottlebrush trees are quite similar (and closest) to the Paperbark melaleucas, who also have flower spikes shaped like a bottlebrush.
Little John Bottlebrush is the common name for Callistemon citrinus [kal-lis-STEE-mon] [sit-REE-nus]. It’s a compact evergreen shrub requiring little care or pruning and enjoys full sun. Callistemon citrinus “Little John” is