Calyptranthes acutissima Plant Care

Calyptranthes acutissima (Calyptranthes acutissima) belongs to the Myrtaceae family within the Calyptranthes genus. Calyptranthes acutissima is native to Jamaica.

Calyptranthes acutissima displays a compact, dense shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Calyptranthes acutissima produces small white or pink fragrant flowers.

Leaf size: approximately 3 inches.

Water a young or newly planted Calyptranthes acutissima 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.

Calyptranthes acutissima thrives in partial shade to full sun.

Calyptranthes acutissima tolerates temperatures of 60–80°F. Calyptranthes acutissima prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining, slightly acidic soil with good organic content. Good drainage is essential for Calyptranthes acutissima to prevent waterlogging, which leads to root rot and fungal issues.

Feed Calyptranthes acutissima 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 sun and well-draining, slightly acidic soil with good organic content. Avoid low spots where water collects after rain.

Calyptranthes acutissima is suited to USDA Zone 10b – 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.

Calyptranthes acutissima 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 Calyptranthes acutissima 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.

Calyptranthes acutissima is frost-tender (hardy to USDA zone 10). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Calyptranthes acutissima can be propagated through seeds, softwood cuttings. Similar propagation techniques also apply to calyptranthes arenicola plant care, which shares the same genus.

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Calyptranthes acutissima is susceptible to aphids, scale insects, spider mites. 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.

Calyptranthes acutissima grows outdoors in USDA Zone 10b – 12b. It survives winters down to planting zone 10b. Calyptranthes acutissima is native to Jamaica. In cooler regions, grow Calyptranthes acutissima as a houseplant or bring it indoors before the first frost.