Black Poui Plant Care

Black Poui (Tabebuia cassinoides) belongs to the Bignoniaceae family within the Tabebuia genus. Black Poui is native to Central and South America. Black Poui is also known as Pink Trumpet Tree.

Black Poui displays a tall, upright tree growth habit, reaching up to 30 ft tall with a spread of approximately 20 ft. Black Poui produces showy trumpet-shaped flowers in various colors.

Leaf size: approximately 6 inches.

Water a young or newly planted Black Poui 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.

Black Poui thrives in full sun.

Tabebuia cassinoides tolerates temperatures of 60–85°F. Black Poui prefers humidity levels of 40–70%.

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

Feed Black Poui 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 full sun and well-draining sandy soil with some organic matter. Avoid low spots where water collects after rain.

Black Poui is suited to USDA Zone 13a.

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.

Black Poui 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 Black Poui 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.

Black Poui 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.

Black Poui can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to pink trumpet tree plant care, which shares the same genus.

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Black Poui is susceptible to aphids, 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.

Black Poui grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Black Poui is native to Central and South America. In cooler regions, grow Black Poui as a houseplant or bring it indoors before the first frost.