White-margined sandcrocus Plant Care

White-margined sandcrocus (Romulea albomarginata) belongs to the Iridaceae family within the Romulea genus. White-margined sandcrocus is native to South Africa, Namibia, Botswana.

White-margined sandcrocus displays a low rosette, clumping growth habit, reaching up to 0.5 ft tall with a spread of approximately 0.5 ft. White-margined sandcrocus produces small star-shaped flowers in various colors.

Leaf size: approximately 6 inches.

Water a young or newly planted White-margined sandcrocus 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.

White-margined sandcrocus thrives in full sun to partial shade.

Romulea albomarginata tolerates temperatures of 50–80°F. White-margined sandcrocus prefers humidity levels of 40–60%.

Well-draining sandy soil with added organic matter like compost. Good drainage is essential for White-margined sandcrocus to prevent waterlogging, which leads to root rot and fungal issues.

Feed White-margined sandcrocus 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 sandy soil with added organic matter like compost. Avoid low spots where water collects after rain.

White-margined sandcrocus is suited to USDA Zone 8b – 10b.

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.

White-margined sandcrocus can spread to about 1 ft (0.2 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.2 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 plant spacing calculator.

Prune White-margined sandcrocus 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.

White-margined sandcrocus is hardy down to USDA zone 8b, so once established it can stay outdoors through winter in that zone and warmer ones.

Water deeply in late autumn before the ground freezes, and spread a 5–8 cm (2–3 in) layer of mulch over the root zone, keeping it away from the trunk.

Young and container-grown shrubs need extra protection: roots in a pot freeze much more easily than roots in the ground.

White-margined sandcrocus can be propagated through by seeds or division of offsets. Similar propagation techniques also apply to columna's romulea plant care, which shares the same genus.

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

White-margined sandcrocus is susceptible to aphids, thrips, 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.

White-margined sandcrocus grows outdoors in USDA Zone 8b – 10b. It survives winters down to planting zone 8b. White-margined sandcrocus is native to South Africa, Namibia, Botswana.