Showy Bottlebrush Plant Care

Showy Bottlebrush (Callistemon speciosus) belongs to the Myrtaceae family within the Callistemon genus. Showy Bottlebrush is native to the south-west of Western Australia.

Showy Bottlebrush displays an upright, bushy shrub growth habit, reaching up to 10 ft tall with a spread of approximately 8 ft. Showy Bottlebrush produces showy bottlebrush-like spikes in red, pink, or white.

Leaf size: approximately 4 inches.

Water a young or newly planted Showy Bottlebrush every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established trees mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Showy Bottlebrush thrives in full sun to partial shade.

Callistemon speciosus tolerates temperatures of 50–85°F. Showy Bottlebrush prefers humidity levels of 40–70%.

Well-draining, slightly acidic soil with added organic matter like compost or peat moss. Good drainage is essential for Showy Bottlebrush to prevent waterlogging, which leads to root rot and fungal issues.

Feed Showy Bottlebrush every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Choose a spot with full sun to partial shade and well-draining, slightly acidic soil with added organic matter like compost or peat moss. Avoid low spots where water collects after rain.

Showy Bottlebrush is suited to USDA Zone 12a.

Plant container-grown or balled-and-burlapped trees in spring or early autumn, setting the root flare at soil level, and water well after planting.

Showy Bottlebrush can spread to about 8 ft (2.4 m) and reach about 10 ft (3 m) tall. Space plants about 8 ft (2.4 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the tree spacing calculator.

Prune Showy Bottlebrush while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the tree in one year.

Showy Bottlebrush is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Showy Bottlebrush can be propagated through seeds, semi-hardwood cuttings.

See all plants toxic to cats and plants toxic to dogs.

Showy Bottlebrush is susceptible to aphids, scale insects, caterpillars. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Showy Bottlebrush grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Showy Bottlebrush is native to the south-west of Western Australia. In cooler regions, grow Showy Bottlebrush as a houseplant or bring it indoors before the first frost.