Callistemon viminalis - The Weeping bottlebrush grows into a medium-sized tree 20-30 ft. tall with an upright form and weeping branches. Young plants grow for many years into narrow columnar plants, 10-15 ft. wide, but become increasingly broad, eventually reaching 20-25 ft. in width. Foliage is comprised of soft narrow pale green leaves that hang from drooping branches to create a weeping appearance. Red flowers occur in early to mid-spring as well as occur intermittently throughout warm months of the year.