Snout Rhinacanthus Plant Care

Snout Rhinacanthus (Rhinacanthus nasutus) belongs to the Acanthaceae family within the Rhinacanthus genus. Snout Rhinacanthus is native to tropical Asia and the western Indian Ocean. Snout Rhinacanthus is also known as White snake root.

Snout Rhinacanthus displays a compact, upright shrub growth habit, reaching up to 2.5 ft tall with a spread of approximately 2 ft. Snout Rhinacanthus produces tubular flowers in shades of pink, purple, or white.

Leaf size: approximately 4 inches.

Water a young or newly planted Snout Rhinacanthus 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.

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

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

Well-draining, rich loamy soil with added perlite for improved drainage. Good drainage is essential for Snout Rhinacanthus to prevent waterlogging, which leads to root rot and fungal issues.

Feed Snout Rhinacanthus 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, rich loamy soil with added perlite for improved drainage. Avoid low spots where water collects after rain.

Snout Rhinacanthus is suited to USDA Zone 13b.

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.

Snout Rhinacanthus can spread to about 2 ft (0.6 m) and reach about 3 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 Snout Rhinacanthus 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.

Snout Rhinacanthus 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.

Snout Rhinacanthus can be propagated through stem cuttings, division of offsets. Similar propagation techniques also apply to snakeweed plant care, which shares the same genus.

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

Snout Rhinacanthus is susceptible to spider mites, aphids, mealybugs. 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.

Snout Rhinacanthus grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Snout Rhinacanthus is native to tropical Asia and the western Indian Ocean. In cooler regions, grow Snout Rhinacanthus as a houseplant or bring it indoors before the first frost.