Swazi Waterberry Plant Care

Swazi Waterberry (Cassipourea swaziensis) belongs to the Rhizophoraceae family within the Cassipourea genus. Swazi Waterberry is native to South Africa and Eswatini.

Swazi Waterberry displays a tall tree, spreading canopy growth habit, reaching up to 30 ft tall with a spread of approximately 20 ft. Swazi Waterberry produces small clusters of white or yellow flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Swazi Waterberry every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established trees mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Swazi Waterberry thrives in partial to full sun.

Cassipourea swaziensis tolerates temperatures of 65–85°F. Swazi Waterberry prefers humidity levels of 50–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining sandy soil with high organic content. Good drainage is essential for Swazi Waterberry to prevent waterlogging, which leads to root rot and fungal issues.

Feed Swazi Waterberry every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees 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 partial to full sun and well-draining sandy soil with high organic content. Avoid low spots where water collects after rain.

Swazi Waterberry is suited to USDA Zone 13b.

Plant container-grown or balled-and-burlapped trees in spring or early autumn, setting the root flare at soil level, and water well after planting.

Swazi Waterberry can spread to about 20 ft (6.1 m) and reach about 30 ft (9 m) tall. Space plants about 20 ft (6.1 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 tree spacing calculator.

Prune Swazi Waterberry 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 tree in one year.

Swazi Waterberry 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.

Swazi Waterberry can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to cassipourea malosana plant care, which shares the same genus.

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Swazi Waterberry 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.

Swazi Waterberry grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Swazi Waterberry is native to South Africa and Eswatini. In cooler regions, grow Swazi Waterberry as a houseplant or bring it indoors before the first frost.