Red-leaf Spider Flower Plant Care

Red-leaf Spider Flower (Grevillea exul subsp. rubiginosa) belongs to the Proteaceae family within the Grevillea genus.

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

Leaf size: approximately 4 inches.

Water a young or newly planted Red-leaf Spider Flower 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.

Red-leaf Spider Flower thrives in full sun to partial shade.

Grevillea exul subsp. rubiginosa tolerates temperatures of 50–80°F. Red-leaf Spider Flower prefers humidity levels of 40–70%.

Well-draining sandy loam with added organic matter. Good drainage is essential for Red-leaf Spider Flower to prevent waterlogging, which leads to root rot and fungal issues.

Feed Red-leaf Spider Flower 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.

Red-leaf Spider Flower 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.

Red-leaf Spider Flower 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 Red-leaf Spider Flower 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.

Red-leaf Spider Flower 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.

Red-leaf Spider Flower can be propagated through seeds, cuttings. Similar propagation techniques also apply to acacia grevillea plant care, which shares the same genus.

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

Red-leaf Spider Flower 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.

Red-leaf Spider Flower grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Red-leaf Spider Flower as a houseplant or bring it indoors before the first frost.