Are Callistemons fast growing?
Simply so, how big does bottlebrush grow?
Bottlebrush as an evergreen shrub (C. citrinus) comes in both dwarf and standard varietals. Dwarf sizes grow up to 3 feet tall and 5 feet wide. Regular varietals grow up to 10 feet tall and wide.
Secondly, are callistemon fast growing?
viminalis 'Prolific' - A small, fast-growing tree 4-6 m high by 4 m wide with large red brushes. viminalis 'Wild River' - A semi-weeping form from North Queensland 4 m high by 2 m wide with brilliant red brushes. Callistemon can be propagated easily from seed which falls readily from mature fruit capsules when dry.
Almost as popular as the laurel, leylandii is a fast growing species that, with a little maintenance, will soon give you a dense protective screen to lend your garden the privacy you're seeking. One of the fastest growing hedge plants, leylandii can grow up to 90cm in a year - so have those pruning shears at the ready!