Fiji Tamanu Plant Care

Fiji Tamanu (Calophyllum vitiense) belongs to the Calophyllaceae family within the Calophyllum genus. Fiji Tamanu is native to Fiji, Niue, the Santa Cruz Islands, Solomon Islands, and Tonga.

Fiji Tamanu displays a tall, spreading tree growth habit, reaching up to 30 ft tall with a spread of approximately 20 ft. Fiji Tamanu produces small, fragrant white flowers in clusters.

Leaf size: approximately 6 inches.

Water a young or newly planted Fiji Tamanu 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.

Fiji Tamanu thrives in full sun to partial shade.

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

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

Feed Fiji Tamanu 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 to partial shade and well-draining, rich loamy soil with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Fiji Tamanu is suited to USDA Zone 11a – 12b.

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.

Fiji Tamanu can spread to about 20 ft (6.1 m) and reach about 30 ft (9 m) tall. Space plants about 20 ft (6.1 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 Fiji Tamanu 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.

Fiji Tamanu is frost-tender (hardy to USDA zone 11). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Fiji Tamanu can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to santa maria plant care, which shares the same genus.

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

Fiji Tamanu 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.

Fiji Tamanu grows outdoors in USDA Zone 11a – 12b. It survives winters down to planting zone 11a. Fiji Tamanu is native to Fiji, Niue, the Santa Cruz Islands, Solomon Islands, and Tonga. In cooler regions, grow Fiji Tamanu as a houseplant or bring it indoors before the first frost.