Spiderhead Plant Care

Spiderhead (Diastella proteoides) belongs to the Proteaceae family within the Diastella genus. Spiderhead is native to the Western Cape and occurs on the Cape Flats from Tokai to Malmesbury and Eerste River.

Spiderhead displays a compact, bushy shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Spiderhead produces showy clusters of small, tubular flowers in shades of pink, red, or white.

Leaf size: approximately 4 inches.

Water a young or newly planted Spiderhead every 7–10 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.

Spiderhead thrives in full sun to partial shade.

Diastella proteoides tolerates temperatures of 60–75°F. Spiderhead prefers humidity levels of 40–60%.

Well-draining acidic soil mix with added organic matter like peat moss and pine bark. Good drainage is essential for Spiderhead to prevent waterlogging, which leads to root rot and fungal issues.

Feed Spiderhead 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 full sun to partial shade and well-draining acidic soil mix with added organic matter like peat moss and pine bark. Avoid low spots where water collects after rain.

Spiderhead 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.

Spiderhead can spread to about 2 ft (0.6 m) and reach about 3 ft (1 m) tall. Space plants about 2 ft (0.6 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 plant spacing calculator.

Prune Spiderhead 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.

Spiderhead 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.

Spiderhead can be propagated through seeds, cuttings. Similar propagation techniques also apply to spreading diastella plant care, which shares the same genus.

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

Spiderhead is susceptible to aphids, scale insects, 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.

Spiderhead grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Spiderhead is native to the Western Cape and occurs on the Cape Flats from Tokai to Malmesbury and Eerste River. In cooler regions, grow Spiderhead as a houseplant or bring it indoors before the first frost.