Macrotheca sandspurry Plant Care

Macrotheca sandspurry (Spergularia macrotheca) belongs to the Caryophyllaceae family within the Spergularia genus. Macrotheca sandspurry is native to western North America from British Columbia to Baja California.

Macrotheca sandspurry displays a low mat-forming groundcover growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Macrotheca sandspurry produces small pink or white flowers in clusters.

Leaf size: approximately 1 inches.

Water a young or newly planted Macrotheca sandspurry 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.

Macrotheca sandspurry thrives in full sun to partial shade.

Spergularia macrotheca tolerates temperatures of 50–75°F. Macrotheca sandspurry prefers humidity levels of 40–60%.

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

Feed Macrotheca sandspurry 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.

Macrotheca sandspurry 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.

Macrotheca sandspurry 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 Macrotheca sandspurry 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.

Macrotheca sandspurry 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.

Macrotheca sandspurry can be propagated through seeds, division. Similar propagation techniques also apply to red sand-spurry plant care, which shares the same genus.

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Macrotheca sandspurry is susceptible to aphids, spider mites, leaf miners. 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.

Macrotheca sandspurry grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Macrotheca sandspurry is native to western North America from British Columbia to Baja California. In cooler regions, grow Macrotheca sandspurry as a houseplant or bring it indoors before the first frost.