Hopea novoguineensis Plant Care

Hopea novoguineensis (Hopea novoguineensis) belongs to the Dipterocarpaceae family within the Hopea genus. Hopea novoguineensis is native to New Guinea and on Halmahera, Maluku Province, Indonesia.

Hopea novoguineensis displays a tall canopy tree growth habit, reaching up to 100 ft tall with a spread of approximately 50 ft. Hopea novoguineensis produces small, inconspicuous flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Hopea novoguineensis 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.

Hopea novoguineensis thrives in full sun to partial shade.

Hopea novoguineensis tolerates temperatures of 65–85°F. Hopea novoguineensis prefers humidity levels of 60–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining loamy soil with high organic content. Good drainage is essential for Hopea novoguineensis to prevent waterlogging, which leads to root rot and fungal issues.

Feed Hopea novoguineensis every 8 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 loamy soil with high organic content. Avoid low spots where water collects after rain.

Hopea novoguineensis is suited to USDA Zone 13b.

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.

Hopea novoguineensis 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 Hopea novoguineensis 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.

Hopea novoguineensis 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.

Hopea novoguineensis can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to chinese hopea plant care, which shares the same genus.

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Hopea novoguineensis 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.

Hopea novoguineensis grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Hopea novoguineensis is native to New Guinea and on Halmahera, Maluku Province, Indonesia. In cooler regions, grow Hopea novoguineensis as a houseplant or bring it indoors before the first frost.