Trident Xanthosia Plant Care

Trident Xanthosia (Xanthosia tridentata) belongs to the Apiaceae family within the Xanthosia genus. Trident Xanthosia is native to south-eastern Australia.

Trident Xanthosia displays a low rosette, spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Trident Xanthosia produces small clusters of tiny white or pink flowers.

Leaf size: approximately 2 inches.

Water a young or newly planted Trident Xanthosia every 3–5 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.

Trident Xanthosia thrives in partial shade to full shade. The optimal light range is 50–200 lux. Avoid placing Trident Xanthosia in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Xanthosia tridentata tolerates temperatures of 60–75°F. Trident Xanthosia prefers humidity levels of 40–60%.

Well-draining sandy loam with added organic matter for moisture retention. Good drainage is essential for Trident Xanthosia to prevent waterlogging, which leads to root rot and fungal issues.

Feed Trident Xanthosia 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 partial shade to full shade and well-draining sandy loam with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Trident Xanthosia is suited to USDA Zone 13a.

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.

Trident Xanthosia can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 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 plant spacing calculator.

Prune Trident Xanthosia 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.

Trident Xanthosia 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.

Trident Xanthosia can be propagated through seeds, division of root clumps. Similar propagation techniques also apply to xanthosia atkinsoniana plant care, which shares the same genus.

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

Trident Xanthosia is susceptible to aphids, spider mites, whiteflies. 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.

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