Horned-fruited Grevillea Plant Care

Horned-fruited Grevillea (Grevillea ceratocarpa) belongs to the Proteaceae family within the Grevillea genus. Horned-fruited Grevillea is native to inland areas of the south-west of Western Australia.

Horned-fruited Grevillea displays an upright, bushy shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Horned-fruited Grevillea produces showy clusters of red, pink, or white flowers.

Leaf size: approximately 4 inches.

Water a young or newly planted Horned-fruited Grevillea 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.

Horned-fruited Grevillea thrives in full sun to partial shade.

Grevillea ceratocarpa tolerates temperatures of 50–80°F. Horned-fruited Grevillea prefers humidity levels of 40–70%.

Well-draining sandy loam with added organic matter. Good drainage is essential for Horned-fruited Grevillea to prevent waterlogging, which leads to root rot and fungal issues.

Feed Horned-fruited Grevillea every 8 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 loam with added organic matter. Avoid low spots where water collects after rain.

Horned-fruited Grevillea is suited to USDA Zone 12a.

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.

Horned-fruited Grevillea 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 Horned-fruited Grevillea 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.

Horned-fruited Grevillea is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Horned-fruited Grevillea can be propagated through seeds, cuttings.

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

Horned-fruited Grevillea 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.

Horned-fruited Grevillea grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Horned-fruited Grevillea is native to inland areas of the south-west of Western Australia. In cooler regions, grow Horned-fruited Grevillea as a houseplant or bring it indoors before the first frost.