Rimu Plant Care

Rimu (Lophomyrtus bullata) belongs to the Myrtaceae family within the Lophomyrtus genus. Rimu is native to New Zealand. Rimu is also known as New Zealand Myrtle, Bubbled Myrtle.

Rimu displays a compact, bushy shrub growth habit, reaching up to 4 ft tall with a spread of approximately 3 ft. Rimu produces small white flowers in clusters.

Leaf size: approximately 2 inches.

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

Rimu thrives in partial to full sun.

Lophomyrtus bullata tolerates temperatures of 50–80°F. Rimu prefers humidity levels of 40–70%.

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

Feed Rimu every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs 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 partial to full sun and well-draining acidic soil with added organic matter like peat moss. Avoid low spots where water collects after rain.

Rimu is suited to USDA Zone 12a.

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

Rimu can spread to about 3 ft (0.9 m) and reach about 4 ft (1 m) tall. Space plants about 3 ft (0.9 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 plant spacing calculator.

Prune Rimu 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 shrub in one year.

Rimu 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.

Rimu can be propagated through softwood cuttings, seeds. Similar propagation techniques also apply to rohutu plant care, which shares the same genus.

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

Rimu 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.

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