Kermadec Myrsine Plant Care

Kermadec Myrsine (Myrsine kermadecensis) belongs to the Primulaceae family within the Myrsine genus. Kermadec Myrsine is native to the Kermadec Islands of New Zealand.

Kermadec Myrsine displays a compact, bushy shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Kermadec Myrsine produces small clusters of white or pink flowers.

Leaf size: approximately 4 inches.

Water a young or newly planted Kermadec Myrsine 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.

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

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

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

Feed Kermadec Myrsine 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 with added organic matter like compost or peat moss. Avoid low spots where water collects after rain.

Kermadec Myrsine is suited to USDA Zone 10b – 11b.

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.

Kermadec Myrsine 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 Kermadec Myrsine 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.

Kermadec Myrsine 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.

Kermadec Myrsine can be propagated through seeds, stem cuttings.

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Kermadec Myrsine 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.

Kermadec Myrsine grows outdoors in USDA Zone 10b – 11b. It survives winters down to planting zone 10b. Kermadec Myrsine is native to the Kermadec Islands of New Zealand. In cooler regions, grow Kermadec Myrsine as a houseplant or bring it indoors before the first frost.