Amboinensis sumatrana Plant Care

Amboinensis sumatrana (Allophylus amboinensis) belongs to the Sapindaceae family within the Allophylus genus. Amboinensis sumatrana is native to Indonesia, Malaysia. Amboinensis sumatrana is also known as Allophylus acuminatus.

Amboinensis sumatrana displays an upright, spreading shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Amboinensis sumatrana produces small clusters of white or pink flowers.

Leaf size: approximately 4 inches.

Water a young or newly planted Amboinensis sumatrana 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.

Amboinensis sumatrana thrives in partial shade to full sun.

Allophylus amboinensis tolerates temperatures of 60–85°F. Amboinensis sumatrana prefers humidity levels of 40–70%.

Well-draining loamy soil with added organic matter for moisture retention. Good drainage is essential for Amboinensis sumatrana to prevent waterlogging, which leads to root rot and fungal issues.

Feed Amboinensis sumatrana 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 partial shade to full sun and well-draining loamy soil with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Amboinensis sumatrana is suited to USDA Zone 13a.

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.

Amboinensis sumatrana 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 Amboinensis sumatrana 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.

Amboinensis sumatrana is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Amboinensis sumatrana can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to allophylus aldabricus plant care, which shares the same genus.

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Amboinensis sumatrana is susceptible to aphids, scale insects, spider mites. 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.

Amboinensis sumatrana grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Amboinensis sumatrana is native to Indonesia, Malaysia. In cooler regions, grow Amboinensis sumatrana as a houseplant or bring it indoors before the first frost.