Myrianthus holstii Plant Care

Myrianthus holstii (Myrianthus holstii) belongs to the Urticaceae family within the Myrianthus genus.

Myrianthus holstii displays a fast-growing tree growth habit, reaching up to 30 ft tall with a spread of approximately 20 ft. Myrianthus holstii produces small, inconspicuous flowers.

Leaf size: approximately 8 inches.

Water a young or newly planted Myrianthus holstii 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.

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

Myrianthus holstii tolerates temperatures of 60–80°F. Myrianthus holstii 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 organic matter. Good drainage is essential for Myrianthus holstii to prevent waterlogging, which leads to root rot and fungal issues.

Feed Myrianthus holstii 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, rich loamy soil with added organic matter. Avoid low spots where water collects after rain.

Myrianthus holstii is suited to USDA Zone 13a.

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.

Myrianthus holstii can spread to about 20 ft (6.1 m) and reach about 30 ft (9 m) tall. Space plants about 20 ft (6.1 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 Myrianthus holstii 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.

Myrianthus holstii 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.

Myrianthus holstii can be propagated through stem cuttings, air layering. Similar propagation techniques also apply to monkey apple plant care, which shares the same genus.

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

Myrianthus holstii 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.

Myrianthus holstii grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Myrianthus holstii as a houseplant or bring it indoors before the first frost.