Wittmackanthus stanleyanus Plant Care

Wittmackanthus stanleyanus (Wittmackanthus stanleyanus) belongs to the Rubiaceae family within the Wittmackanthus genus. Wittmackanthus stanleyanus is native to Panama, Colombia, Ecuador, Peru and Guyana.

Wittmackanthus stanleyanus displays a compact, mounding shrub growth habit, reaching up to 2.5 ft tall with a spread of approximately 3 ft. Wittmackanthus stanleyanus produces small, fragrant white flowers in clusters.

Leaf size: approximately 4 inches.

Water a young or newly planted Wittmackanthus stanleyanus 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.

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

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

Rich, well-draining soil with high organic content. Good drainage is essential for Wittmackanthus stanleyanus to prevent waterlogging, which leads to root rot and fungal issues.

Feed Wittmackanthus stanleyanus 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 rich, well-draining soil with high organic content. Avoid low spots where water collects after rain.

Wittmackanthus stanleyanus 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.

Wittmackanthus stanleyanus can spread to about 3 ft (0.9 m) and reach about 3 ft (1 m) tall. Space plants about 3 ft (0.9 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 Wittmackanthus stanleyanus 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.

Wittmackanthus stanleyanus 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.

Wittmackanthus stanleyanus can be propagated through seeds, stem cuttings.

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Wittmackanthus stanleyanus is susceptible to aphids, spider mites, scale insects. 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.

Wittmackanthus stanleyanus grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Wittmackanthus stanleyanus is native to Panama, Colombia, Ecuador, Peru and Guyana. In cooler regions, grow Wittmackanthus stanleyanus as a houseplant or bring it indoors before the first frost.