Howell's dimerisia Plant Care

Howell's dimerisia (Dimeresia howellii) belongs to the Asteraceae family within the Dimeresia genus. Howell's dimerisia is also known as Ereminula howellii.

Howell's dimerisia displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Howell's dimerisia produces small daisy-like flowers in various colors.

Leaf size: approximately 2 inches.

Water a young or newly planted Howell's dimerisia 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.

Howell's dimerisia thrives in full sun to partial shade.

Dimeresia howellii tolerates temperatures of 60–80°F. Howell's dimerisia prefers humidity levels of 40–60%.

Well-draining sandy soil mix with some organic matter. Good drainage is essential for Howell's dimerisia to prevent waterlogging, which leads to root rot and fungal issues.

Feed Howell's dimerisia 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 mix with some organic matter. Avoid low spots where water collects after rain.

Howell's dimerisia 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.

Howell's dimerisia can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 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 Howell's dimerisia 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.

Howell's dimerisia 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.

Howell's dimerisia can be propagated through seeds, division of clumps.

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Howell's dimerisia is susceptible to aphids, whiteflies, 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.

Howell's dimerisia grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Howell's dimerisia as a houseplant or bring it indoors before the first frost.