River Peppermint Plant Care

River Peppermint (Eucalyptus elata) belongs to the Myrtaceae family within the Eucalyptus genus. River Peppermint is native to eastern Australia. River Peppermint is also known as River Box.

River Peppermint displays a fast-growing tall tree growth habit, reaching up to 100 ft tall with a spread of approximately 50 ft. River Peppermint produces small white, cream, or pink flowers in clusters.

Leaf size: approximately 6 inches.

Water a young or newly planted River Peppermint 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.

River Peppermint thrives in full sun.

Eucalyptus elata tolerates temperatures of 50–85°F. River Peppermint prefers humidity levels of 40–70%.

Well-draining sandy loam with some organic matter. Good drainage is essential for River Peppermint to prevent waterlogging, which leads to root rot and fungal issues.

Feed River Peppermint 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 and well-draining sandy loam with some organic matter. Avoid low spots where water collects after rain.

River Peppermint 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.

River Peppermint can spread to about 50 ft (15.2 m) and reach about 100 ft (30 m) tall. Space plants about 50 ft (15.2 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 River Peppermint 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.

River Peppermint 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.

River Peppermint can be propagated through seeds, cuttings. Similar propagation techniques also apply to silver dollar eucalyptus plant care, which shares the same genus.

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River Peppermint is susceptible to lerp psyllids, eucalyptus gall wasp. 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.

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