Flame Tree Plant Care

Flame Tree (Alloxylon flammeum) belongs to the Proteaceae family within the Alloxylon genus. Flame Tree is native to the Queensland tropical rain forests of northeastern Australia. Flame Tree is also known as Dorrigo Flame Tree.

Flame Tree displays a tall tree, upright growth habit, reaching up to 30 ft tall with a spread of approximately 15 ft. Flame Tree produces showy red or orange flowers in clusters.

Leaf size: approximately 6 inches.

Water a young or newly planted Flame Tree 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.

Flame Tree thrives in full sun to partial shade.

Alloxylon flammeum tolerates temperatures of 50–80°F. Flame Tree prefers humidity levels of 40–70%.

Well-draining acidic soil mix with added organic matter like peat moss and pine bark. Good drainage is essential for Flame Tree to prevent waterlogging, which leads to root rot and fungal issues.

Feed Flame Tree 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 acidic soil mix with added organic matter like peat moss and pine bark. Avoid low spots where water collects after rain.

Flame Tree 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.

Flame Tree can spread to about 15 ft (4.6 m) and reach about 30 ft (9 m) tall. Space plants about 15 ft (4.6 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 Flame Tree 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.

Flame Tree 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.

Flame Tree can be propagated through seeds, cuttings. Similar propagation techniques also apply to short-fruited tree plant care, which shares the same genus.

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

Flame Tree is susceptible to aphids, scale insects. 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.

Flame Tree grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Flame Tree is native to the Queensland tropical rain forests of northeastern Australia. In cooler regions, grow Flame Tree as a houseplant or bring it indoors before the first frost.