Ristantia gouldii Plant Care

Ristantia gouldii (Ristantia gouldii) belongs to the Myrtaceae family within the Ristantia genus. Ristantia gouldii is native to a small area of the Wet Tropics bioregion of Queensland, Australia.

Ristantia gouldii displays a tall, upright tree growth habit, reaching up to 15 ft tall with a spread of approximately 8 ft. Ristantia gouldii produces showy clusters of white, pink, or red flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Ristantia gouldii every 7–10 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.

Ristantia gouldii thrives in full sun to partial shade.

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

Loamy, well-draining soil with added organic matter like compost. Good drainage is essential for Ristantia gouldii to prevent waterlogging, which leads to root rot and fungal issues.

Feed Ristantia gouldii 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 loamy, well-draining soil with added organic matter like compost. Avoid low spots where water collects after rain.

Ristantia gouldii 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.

Ristantia gouldii can spread to about 8 ft (2.4 m) and reach about 15 ft (5 m) tall. Space plants about 8 ft (2.4 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 Ristantia gouldii 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.

Ristantia gouldii 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.

Ristantia gouldii can be propagated through seeds, softwood cuttings. Similar propagation techniques also apply to ristantia pachysperma plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Ristantia gouldii is susceptible to aphids, scale insects, caterpillars. 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.

Ristantia gouldii grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Ristantia gouldii is native to a small area of the Wet Tropics bioregion of Queensland, Australia. In cooler regions, grow Ristantia gouldii as a houseplant or bring it indoors before the first frost.