Leptospermum maxwellii Plant Care

Leptospermum maxwellii (Leptospermum maxwellii) belongs to the Myrtaceae family within the Leptospermum genus. Leptospermum maxwellii is native to Western Australia.

Leptospermum maxwellii displays an upright, spreading shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Leptospermum maxwellii produces small, white, pink, or red flowers with prominent stamens.

Leaf size: approximately 2 inches.

Water a young or newly planted Leptospermum maxwellii 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.

Leptospermum maxwellii thrives in full sun to partial shade.

Leptospermum maxwellii tolerates temperatures of 50–80°F. Leptospermum maxwellii prefers humidity levels of 40–70%.

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

Feed Leptospermum maxwellii 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. Avoid low spots where water collects after rain.

Leptospermum maxwellii 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.

Leptospermum maxwellii can spread to about 4 ft (1.2 m) and reach about 6 ft (2 m) tall. Space plants about 4 ft (1.2 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 Leptospermum maxwellii 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.

Leptospermum maxwellii 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.

Leptospermum maxwellii can be propagated through seeds, semi-hardwood cuttings. Similar propagation techniques also apply to new zealand tea tree plant care, which shares the same genus.

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

Leptospermum maxwellii 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.

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