Erect rasp-fern Plant Care

Erect rasp-fern (Haloragis erecta) belongs to the Haloragaceae family within the Haloragis genus. Erect rasp-fern is native to New Zealand. Erect rasp-fern is also known as Shrubby rasp-fern.

Erect rasp-fern displays a low spreading shrub growth habit, reaching up to 2 ft tall with a spread of approximately 3 ft. Erect rasp-fern produces small inconspicuous flowers in clusters.

Leaf size: approximately 2 inches.

Water a young or newly planted Erect rasp-fern every 7–14 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.

Erect rasp-fern thrives in full sun to partial shade.

Haloragis erecta tolerates temperatures of 50–80°F. Erect rasp-fern prefers humidity levels of 40–70%.

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

Feed Erect rasp-fern 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 loam with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Erect rasp-fern is suited to USDA Zone 12a.

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.

Erect rasp-fern can spread to about 3 ft (0.9 m) and reach about 2 ft (1 m) tall. Space plants about 3 ft (0.9 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 Erect rasp-fern 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.

Erect rasp-fern 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.

Erect rasp-fern can be propagated through seeds, stem cuttings.

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

Erect rasp-fern is susceptible to aphids, scale insects. 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.

Erect rasp-fern grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Erect rasp-fern is native to New Zealand. In cooler regions, grow Erect rasp-fern as a houseplant or bring it indoors before the first frost.