Retanilla trinervia Plant Care

Retanilla trinervia (Retanilla trinervia) belongs to the Rhamnaceae family within the Retanilla genus. Retanilla trinervia is native to the mountains of central Chile.

Retanilla trinervia displays an upright, spreading shrub growth habit, reaching up to 4 ft tall with a spread of approximately 5 ft. Retanilla trinervia produces small clusters of white or pink flowers.

Leaf size: approximately 3 inches.

Water a young or newly planted Retanilla trinervia 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.

Retanilla trinervia thrives in partial shade to full sun.

Retanilla trinervia tolerates temperatures of 50–80°F. Retanilla trinervia prefers humidity levels of 40–70%.

Well-draining acidic soil mix with added organic matter. Good drainage is essential for Retanilla trinervia to prevent waterlogging, which leads to root rot and fungal issues.

Feed Retanilla trinervia 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 partial shade to full sun and well-draining acidic soil mix with added organic matter. Avoid low spots where water collects after rain.

Retanilla trinervia is suited to USDA Zone 12a.

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.

Retanilla trinervia can spread to about 5 ft (1.5 m) and reach about 4 ft (1 m) tall. Space plants about 5 ft (1.5 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 Retanilla trinervia 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.

Retanilla trinervia is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Retanilla trinervia can be propagated through softwood cuttings, seeds.

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

Retanilla trinervia 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.

Retanilla trinervia grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Retanilla trinervia is native to the mountains of central Chile. In cooler regions, grow Retanilla trinervia as a houseplant or bring it indoors before the first frost.