Ochrosia octandra Plant Care

Ochrosia octandra (Ochrosia thiollierei) belongs to the Apocynaceae family within the Ochrosia genus. Ochrosia octandra is native to New Caledonia. Ochrosia octandra is also known as Carissa thiollierei.

Ochrosia octandra displays a small tree or shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Ochrosia octandra produces small, fragrant white or yellow flowers in clusters.

Leaf size: approximately 4 inches.

Water a young or newly planted Ochrosia octandra every 7–10 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.

Ochrosia octandra thrives in bright indirect to partial shade. Avoid placing Ochrosia octandra in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Ochrosia thiollierei tolerates temperatures of 65–80°F. Ochrosia octandra prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining, acidic soil mix with added organic matter like peat moss. Good drainage is essential for Ochrosia octandra to prevent waterlogging, which leads to root rot and fungal issues.

Feed Ochrosia octandra 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 bright indirect to partial shade and well-draining, acidic soil mix with added organic matter like peat moss. Avoid low spots where water collects after rain.

Ochrosia octandra is suited to USDA Zone 10b – 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.

Ochrosia octandra 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 Ochrosia octandra 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.

Ochrosia octandra 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.

Ochrosia octandra can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to ochrosia ackeringae plant care, which shares the same genus.

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

Ochrosia octandra 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.

Ochrosia octandra grows outdoors in USDA Zone 10b – 12b. It survives winters down to planting zone 10b. Ochrosia octandra is native to New Caledonia. In cooler regions, grow Ochrosia octandra as a houseplant or bring it indoors before the first frost.