Desert thorn Plant Care

Desert thorn (Calligonum elegans) belongs to the Polygonaceae family within the Calligonum genus. Desert thorn is native to Central Asia and to Xinjiang in China. Desert thorn is also known as Arabian calligonum.

Desert thorn displays a low shrub, spreading growth habit, reaching up to 2 ft tall with a spread of approximately 4 ft. Desert thorn produces small, inconspicuous flowers in clusters.

Leaf size: approximately 1.5 inches.

Water a young or newly planted Desert thorn every 14–21 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.

Desert thorn thrives in full sun.

Calligonum elegans tolerates temperatures of 65–85°F. Desert thorn prefers humidity levels of 20–50%.

Sandy, well-draining soil with low fertility and high alkalinity. Good drainage is essential for Desert thorn to prevent waterlogging, which leads to root rot and fungal issues.

Feed Desert thorn every 8 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 sandy, well-draining soil with low fertility and high alkalinity. Avoid low spots where water collects after rain.

Desert thorn is suited to USDA Zone 13b.

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.

Desert thorn can spread to about 4 ft (1.2 m) and reach about 2 ft (1 m) tall. Space plants about 4 ft (1.2 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 Desert thorn 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.

Desert thorn 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.

Desert thorn can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to calligonum bakuense plant care, which shares the same genus.

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Desert thorn is susceptible to aphids, spider mites, 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.

Desert thorn grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Desert thorn is native to Central Asia and to Xinjiang in China. In cooler regions, grow Desert thorn as a houseplant or bring it indoors before the first frost.