Coulter's Malacothrix Plant Care

Coulter's Malacothrix (Malacothrix coulteri) belongs to the Asteraceae family within the Malacothrix genus. Coulter's Malacothrix is also known as Coulter's Desert Dandelion, Malacolepis coulteri, Malacothrix coulteri var. cognata.

Coulter's Malacothrix displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Coulter's Malacothrix produces small daisy-like flowers in shades of white, yellow, or purple.

Leaf size: approximately 2 inches.

Water a young or newly planted Coulter's Malacothrix 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.

Coulter's Malacothrix thrives in full sun.

Malacothrix coulteri tolerates temperatures of 50–80°F. Coulter's Malacothrix prefers humidity levels of 30–60%.

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

Feed Coulter's Malacothrix 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 and well-draining sandy soil with some organic matter. Avoid low spots where water collects after rain.

Coulter's Malacothrix 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.

Coulter's Malacothrix 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 Coulter's Malacothrix 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.

Coulter's Malacothrix 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.

Coulter's Malacothrix can be propagated through seeds. Similar propagation techniques also apply to woolly malacothrix plant care, which shares the same genus.

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

Coulter's Malacothrix is susceptible to aphids, whiteflies. 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.

Coulter's Malacothrix grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Coulter's Malacothrix as a houseplant or bring it indoors before the first frost.