Black Ixora Plant Care

Black Ixora (Ixora nigricans) belongs to the Rubiaceae family within the Ixora genus. Black Ixora is native to throughout the forests of the Western Ghats of India.

Black Ixora displays a compact, bushy shrub growth habit, reaching up to 4 ft tall with a spread of approximately 4 ft. Black Ixora produces clusters of small, brightly colored tubular flowers.

Leaf size: approximately 4 inches.

Water a young or newly planted Black Ixora 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.

Black Ixora thrives in bright indirect light. Avoid placing Black Ixora in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Ixora nigricans tolerates temperatures of 60–80°F. Black Ixora prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

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

Feed Black Ixora every 4 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, acidic soil with added organic matter like peat moss or compost. Avoid low spots where water collects after rain.

Black Ixora is suited to USDA Zone 13a.

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.

Black Ixora can spread to about 4 ft (1.2 m) and reach about 4 ft (1 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 plant spacing calculator.

Prune Black Ixora 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.

Black Ixora 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.

Black Ixora can be propagated through stem cuttings, air layering. Similar propagation techniques also apply to chinese ixora plant care, which shares the same genus.

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

Black Ixora 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.

Black Ixora grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Black Ixora is native to throughout the forests of the Western Ghats of India. In cooler regions, grow Black Ixora as a houseplant or bring it indoors before the first frost.