Alpine Merrilliopanax Plant Care

Alpine Merrilliopanax (Merrilliopanax alpinus) belongs to the Araliaceae family within the Merrilliopanax genus. Alpine Merrilliopanax is native to Tibet (China), Bhutan, northeast India, and Nepal.

Alpine Merrilliopanax displays a tall, upright tree growth habit, reaching up to 15 ft tall with a spread of approximately 8 ft. Alpine Merrilliopanax produces small white flowers in clusters.

Leaf size: approximately 12 inches.

Water a young or newly planted Alpine Merrilliopanax every 7–14 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.

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

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

Rich, well-draining soil with added organic matter like compost or peat moss. Good drainage is essential for Alpine Merrilliopanax to prevent waterlogging, which leads to root rot and fungal issues.

Feed Alpine Merrilliopanax 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 light and rich, well-draining soil with added organic matter like compost or peat moss. Avoid low spots where water collects after rain.

Alpine Merrilliopanax is suited to USDA Zone 13b.

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.

Alpine Merrilliopanax can spread to about 8 ft (2.4 m) and reach about 15 ft (5 m) tall. Space plants about 8 ft (2.4 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 Alpine Merrilliopanax 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.

Alpine Merrilliopanax 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.

Alpine Merrilliopanax can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to merrilliopanax listeri plant care, which shares the same genus.

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

Alpine Merrilliopanax is susceptible to 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.

Alpine Merrilliopanax grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Alpine Merrilliopanax is native to Tibet (China), Bhutan, northeast India, and Nepal. In cooler regions, grow Alpine Merrilliopanax as a houseplant or bring it indoors before the first frost.