Box-leaf Spyridium Plant Care

Box-leaf Spyridium (Spyridium buxifolium) belongs to the Rhamnaceae family within the Spyridium genus. Box-leaf Spyridium is native to New South Wales.

Box-leaf Spyridium displays a compact, spreading shrub growth habit, reaching up to 3 ft tall with a spread of approximately 4 ft. Box-leaf Spyridium produces small white or pink flowers in clusters.

Leaf size: approximately 2 inches.

Water a young or newly planted Box-leaf Spyridium 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.

Box-leaf Spyridium thrives in full sun to partial shade.

Spyridium buxifolium tolerates temperatures of 50–80°F. Box-leaf Spyridium prefers humidity levels of 40–70%.

Well-draining sandy soil mix with some organic matter. Good drainage is essential for Box-leaf Spyridium to prevent waterlogging, which leads to root rot and fungal issues.

Feed Box-leaf Spyridium 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.

Box-leaf Spyridium 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.

Box-leaf Spyridium can spread to about 4 ft (1.2 m) and reach about 3 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 Box-leaf Spyridium 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.

Box-leaf Spyridium 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.

Box-leaf Spyridium can be propagated through seeds, cuttings. Similar propagation techniques also apply to spyridium bifidum plant care, which shares the same genus.

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Box-leaf Spyridium is susceptible to aphids, scale insects, 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.

Box-leaf Spyridium grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Box-leaf Spyridium is native to New South Wales. In cooler regions, grow Box-leaf Spyridium as a houseplant or bring it indoors before the first frost.