Micrantheum hexandrum Plant Care

Micrantheum hexandrum (Micrantheum hexandrum) belongs to the Picrodendraceae family within the Micrantheum genus. Micrantheum hexandrum is native to eastern Australia.

Micrantheum hexandrum displays a compact, spreading shrub growth habit, reaching up to 1.5 ft tall with a spread of approximately 2 ft. Micrantheum hexandrum produces small, inconspicuous greenish-yellow flowers.

Leaf size: approximately 3 inches.

Water a young or newly planted Micrantheum hexandrum 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.

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

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

Well-draining, slightly acidic soil mix with added organic matter like peat moss. Good drainage is essential for Micrantheum hexandrum to prevent waterlogging, which leads to root rot and fungal issues.

Feed Micrantheum hexandrum 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 well-draining, slightly acidic soil mix with added organic matter like peat moss. Avoid low spots where water collects after rain.

Micrantheum hexandrum 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.

Micrantheum hexandrum 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 Micrantheum hexandrum 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.

Micrantheum hexandrum 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.

Micrantheum hexandrum can be propagated through stem cuttings, air layering. Similar propagation techniques also apply to micrantheum demissum plant care, which shares the same genus.

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

Micrantheum hexandrum is susceptible to spider mites, mealybugs, 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.

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