Round-leaved Gumwood Plant Care

Round-leaved Gumwood (Commidendrum rotundifolium) belongs to the Asteraceae family within the Commidendrum genus. Round-leaved Gumwood is native to the island of Saint Helena. Round-leaved Gumwood is also known as St Helena Gumwood, Psiadia rotundifolia, Solidago rotundifolia.

Round-leaved Gumwood displays a small tree or shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Round-leaved Gumwood produces small white or yellow flowers in clusters.

Leaf size: approximately 3 inches.

Water a young or newly planted Round-leaved Gumwood 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.

Round-leaved Gumwood thrives in full sun to partial shade.

Commidendrum rotundifolium tolerates temperatures of 65–80°F. Round-leaved Gumwood prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining sandy soil with added organic matter for nutrients. Good drainage is essential for Round-leaved Gumwood to prevent waterlogging, which leads to root rot and fungal issues.

Feed Round-leaved Gumwood 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 sandy soil with added organic matter for nutrients. Avoid low spots where water collects after rain.

Round-leaved Gumwood is suited to USDA Zone 13b.

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.

Round-leaved Gumwood can spread to about 4 ft (1.2 m) and reach about 6 ft (2 m) tall. Space plants about 4 ft (1.2 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 Round-leaved Gumwood 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.

Round-leaved Gumwood 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.

Round-leaved Gumwood can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to robust commidendrum plant care, which shares the same genus.

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Round-leaved Gumwood is susceptible to aphids, whiteflies, 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.

Round-leaved Gumwood grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Round-leaved Gumwood is native to the island of Saint Helena. In cooler regions, grow Round-leaved Gumwood as a houseplant or bring it indoors before the first frost.