Mountain Pepper Plant Care

Mountain Pepper (Tasmannia xerophila) belongs to the Winteraceae family within the Tasmannia genus. Mountain Pepper is native to south-eastern continental Australia. Mountain Pepper is also known as Alpine Pepper.

Mountain Pepper displays a compact, bushy shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Mountain Pepper produces small, inconspicuous flowers.

Leaf size: approximately 4 inches.

Water a young or newly planted Mountain Pepper every 7–14 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.

Mountain Pepper thrives in partial shade to full shade. The optimal light range is 100–500 lux. Avoid placing Mountain Pepper in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Tasmannia xerophila tolerates temperatures of 60–75°F. Mountain Pepper prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining, acidic soil with high organic matter content. Good drainage is essential for Mountain Pepper to prevent waterlogging, which leads to root rot and fungal issues.

Feed Mountain Pepper 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 shade and well-draining, acidic soil with high organic matter content. Avoid low spots where water collects after rain.

Mountain Pepper is suited to USDA Zone 13a.

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.

Mountain Pepper 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 Mountain Pepper 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.

Mountain Pepper 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.

Mountain Pepper can be propagated through seeds, cuttings. Similar propagation techniques also apply to pepper bush plant care, which shares the same genus.

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

Mountain Pepper is susceptible to aphids, 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.

Mountain Pepper grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Mountain Pepper is native to south-eastern continental Australia. In cooler regions, grow Mountain Pepper as a houseplant or bring it indoors before the first frost.