Melastoma granulosum Plant Care

Melastoma granulosum (Pleroma granulosum) belongs to the Melastomataceae family within the Pleroma genus. Melastoma granulosum is native to Bolivia and Brazil. Melastoma granulosum is also known as Antheryta granulosa, Tibouchina granulosa, Lasiandra fontanesiana.

Melastoma granulosum displays an upright, bushy shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Melastoma granulosum produces showy, colorful flowers in shades of pink, purple, or white.

Leaf size: approximately 6 inches.

Water a young or newly planted Melastoma granulosum 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.

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

Pleroma granulosum tolerates temperatures of 65–80°F. Melastoma granulosum 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 Melastoma granulosum to prevent waterlogging, which leads to root rot and fungal issues.

Feed Melastoma granulosum 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, acidic soil with high organic matter content. Avoid low spots where water collects after rain.

Melastoma granulosum 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.

Melastoma granulosum 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 Melastoma granulosum 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.

Melastoma granulosum 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.

Melastoma granulosum can be propagated through softwood cuttings, division. Similar propagation techniques also apply to common tibouchina plant care, which shares the same genus.

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Melastoma granulosum 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.

Melastoma granulosum grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Melastoma granulosum is native to Bolivia and Brazil. In cooler regions, grow Melastoma granulosum as a houseplant or bring it indoors before the first frost.