Mountain Heath Plant Care

Mountain Heath (Acrothamnus montanus) belongs to the Ericaceae family within the Acrothamnus genus. Mountain Heath is native to sub-alpine to alpine areas of southeast Australia.

Mountain Heath displays a low spreading shrub growth habit, reaching up to 1.5 ft tall with a spread of approximately 2 ft. Mountain Heath produces small bell-shaped white flowers in clusters.

Leaf size: approximately 2.5 inches.

Water a young or newly planted Mountain Heath 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.

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

Acrothamnus montanus tolerates temperatures of 55–70°F. Mountain Heath prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining acidic soil mix with high organic content, such as peat moss and pine bark. Good drainage is essential for Mountain Heath to prevent waterlogging, which leads to root rot and fungal issues.

Feed Mountain Heath 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 mix with high organic content, such as peat moss and pine bark. Avoid low spots where water collects after rain.

Mountain Heath is suited to USDA Zone 12b.

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 Heath can spread to about 2 ft (0.6 m) and reach about 2 ft (0 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 Heath 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 Heath 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.

Mountain Heath can be propagated through seeds, stem cuttings.

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

Mountain Heath is susceptible to spider mites, 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 Heath grows outdoors in USDA Zone 12b. It survives winters down to planting zone 12b. Mountain Heath is native to sub-alpine to alpine areas of southeast Australia. In cooler regions, grow Mountain Heath as a houseplant or bring it indoors before the first frost.