Callistemon citrinus
Crimson Bottlebrush
Family |
Myrtaceae |
Genus |
Callistemon |
Species |
citrinus |
Category |
Tropicals, Woody |
Type |
Tree (evergreen) |
Synonyms |
Metrosideros citrina, Callistemon lanceolatus |
USDA Hardiness Zone |
9 - 10 |
Canadian Hardiness Zone |
Requires cold season protection under glass. |
RHS Hardiness Zone |
H2 - H4 |
Temperature (°C) |
7 |
Temperature (°F) |
45 |
Height |
1 - 7 m |
Spread |
1 - 2 m |
Landscape |
Hedge, screening, specimen or accent plant. |
Cultivation |
Full sun. Thrives in well-drained soils with high organic matter. Warm, dry climates and is drought tolerant. |
Shape |
Large and upright. |
Growth |
Medium |
Pests |
Spider mites and scale. |
Habitat |
Swamps and along the sides of rocky streams. |
Bark/Stem Description |
Hard. |
Flower/Leaf Bud Description |
Grouped in dozens and are 1 - 4 cm in size. |
Leaf Description |
Alternately arranged, thin and pointed at the top. 8 mm wide and 3 - 7 cm long. Gives off a lemon scent when squeezed or crushed. |
Flower Description |
The flowers have spikes that are about 6 - 10 cm long. Flowers bloom late spring to early summer in their native region and can bloom again in November and December in cooler climates. |
Fruit Description |
Small, cup-shaped capsules that appear in clusters. Located along the stems of the plant and are about 7 mm wide. |
Colour Description |
The bark is dark brown. The buds are a greenish-red. The flowers are bright red. The leaves are medium green. |
Texture Description |
The bark has a fairly smooth to stringy texture. New growth has a velvety texture. |
Notable Specimens |
Missouri Botanical Garden, St. Louis, Missouri, United States of America. Royal Botanic Gardens, Melbourne, Australia. |
Propagation |
Stem tip cuttings in spring or early summer. Cut new shoots of growth approximately 7 - 10 cm in size, place them in a pot of peat moss, coarse sand and keep moist. Callistemon citrinus can also be grown from seed in spring. |
Ethnobotanical Uses (Disclaimer) |
The leaves can be used in teas and to make a cinnamon dye. The flowers can be used for a tan dye. |