False Mastic Plant Care

False Mastic (Microdesmis caseariifolia) belongs to the Pandaceae family within the Microdesmis genus. False Mastic is native to Bangladesh, Myanmar, Cambodia, Indonesia, Laos, Malaysia, Philippines, Vietnam.

False Mastic displays a compact, spreading shrub growth habit, reaching up to 2 ft tall with a spread of approximately 3 ft. False Mastic produces small, inconspicuous flowers.

Leaf size: approximately 4 inches.

Water a young or newly planted False Mastic 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.

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

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

Well-draining, fertile soil with high organic content. Good drainage is essential for False Mastic to prevent waterlogging, which leads to root rot and fungal issues.

Feed False Mastic 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, fertile soil with high organic content. Avoid low spots where water collects after rain.

False Mastic is suited to USDA Zone 11a – 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.

False Mastic can spread to about 3 ft (0.9 m) and reach about 2 ft (1 m) tall. Space plants about 3 ft (0.9 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 False Mastic 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.

False Mastic is frost-tender (hardy to USDA zone 11). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

False Mastic can be propagated through seeds, stem cuttings.

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False Mastic is susceptible to aphids, 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.

False Mastic grows outdoors in USDA Zone 11a – 12b. It survives winters down to planting zone 11a. False Mastic is native to Bangladesh, Myanmar, Cambodia, Indonesia, Laos, Malaysia, Philippines, Vietnam. In cooler regions, grow False Mastic as a houseplant or bring it indoors before the first frost.