Harpullia alata Plant Care

Harpullia alata (Harpullia alata) belongs to the Sapindaceae family within the Harpullia genus. Harpullia alata is native to eastern Australia.

Harpullia alata displays a small to medium-sized tree growth habit, reaching up to 20 ft tall with a spread of approximately 15 ft. Harpullia alata produces small clusters of white or pink flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Harpullia alata 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.

Harpullia alata thrives in full sun to partial shade.

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

Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Harpullia alata to prevent waterlogging, which leads to root rot and fungal issues.

Feed Harpullia alata 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 loamy soil with added compost for nutrients. Avoid low spots where water collects after rain.

Harpullia alata 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.

Harpullia alata can spread to about 15 ft (4.6 m) and reach about 20 ft (6 m) tall. Space plants about 15 ft (4.6 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 tree spacing calculator.

Prune Harpullia alata 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.

Harpullia alata 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.

Harpullia alata can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to tulipwood plant care, which shares the same genus.

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Harpullia alata 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.

Harpullia alata grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Harpullia alata is native to eastern Australia. In cooler regions, grow Harpullia alata as a houseplant or bring it indoors before the first frost.