Plinia rivularis Plant Care

Plinia rivularis (Plinia rivularis) belongs to the Myrtaceae family within the Plinia genus.

Plinia rivularis displays a small to medium-sized tree growth habit, reaching up to 15 ft tall with a spread of approximately 10 ft. Plinia rivularis produces small white flowers with a sweet fragrance.

Leaf size: approximately 4 inches.

Water a young or newly planted Plinia rivularis every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established trees mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Plinia rivularis thrives in full sun to partial shade.

Plinia rivularis tolerates temperatures of 60–85°F. Plinia rivularis prefers humidity levels of 50–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining acidic soil with high organic content, such as a mix of peat moss, pine bark, and perlite. Good drainage is essential for Plinia rivularis to prevent waterlogging, which leads to root rot and fungal issues.

Feed Plinia rivularis every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees 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 full sun to partial shade and well-draining acidic soil with high organic content, such as a mix of peat moss, pine bark, and perlite. Avoid low spots where water collects after rain.

Plinia rivularis is suited to USDA Zone 13a.

Plant container-grown or balled-and-burlapped trees in spring or early autumn, setting the root flare at soil level, and water well after planting.

Plinia rivularis can spread to about 10 ft (3 m) and reach about 15 ft (5 m) tall. Space plants about 10 ft (3 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 tree spacing calculator.

Prune Plinia rivularis 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 tree in one year.

Plinia rivularis 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.

Plinia rivularis can be propagated through seeds, air layering. Similar propagation techniques also apply to plinia asa-grayi plant care, which shares the same genus.

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Plinia rivularis is susceptible to aphids, scale insects, fruit flies. 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.

Plinia rivularis grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Plinia rivularis as a houseplant or bring it indoors before the first frost.