Claoxylon hillii var. borneensis Plant Care

Claoxylon hillii var. borneensis (Claoxylon hillii) belongs to the Euphorbiaceae family within the Claoxylon genus. Claoxylon hillii var. borneensis is native to New Guinea and northern Australia. Claoxylon hillii var. borneensis is also known as Claoxylon hillii var. cuneatum.

Claoxylon hillii var. borneensis displays a tall, upright shrub growth habit, reaching up to 4 ft tall with a spread of approximately 2 ft. Claoxylon hillii var. borneensis produces small clusters of inconspicuous flowers.

Leaf size: approximately 5 inches.

Water a young or newly planted Claoxylon hillii var. borneensis every 7–10 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.

Claoxylon hillii var. borneensis thrives in bright indirect light. Avoid placing Claoxylon hillii var. borneensis in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Claoxylon hillii tolerates temperatures of 65–80°F. Claoxylon hillii var. borneensis prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining soil mix with added perlite for aeration. Good drainage is essential for Claoxylon hillii var. borneensis to prevent waterlogging, which leads to root rot and fungal issues.

Feed Claoxylon hillii var. borneensis 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 bright indirect light and well-draining soil mix with added perlite for aeration. Avoid low spots where water collects after rain.

Claoxylon hillii var. borneensis is suited to USDA Zone 10b – 12b.

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.

Claoxylon hillii var. borneensis can spread to about 2 ft (0.6 m) and reach about 4 ft (1 m) tall. Space plants about 2 ft (0.6 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 plant spacing calculator.

Prune Claoxylon hillii var. borneensis 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.

Claoxylon hillii var. borneensis is frost-tender (hardy to USDA zone 10). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Claoxylon hillii var. borneensis can be propagated through stem cuttings, air layering. Similar propagation techniques also apply to none known plant care, which shares the same genus.

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Claoxylon hillii var. borneensis is susceptible to spider mites, mealybugs, 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.

Claoxylon hillii var. borneensis grows outdoors in USDA Zone 10b – 12b. It survives winters down to planting zone 10b. Claoxylon hillii var. borneensis is native to New Guinea and northern Australia. In cooler regions, grow Claoxylon hillii var. borneensis as a houseplant or bring it indoors before the first frost.