Mangrove Trumpet Tree Plant Care

Mangrove Trumpet Tree (Dolichandrone spathacea) belongs to the Bignoniaceae family within the Dolichandrone genus.

Mangrove Trumpet Tree displays a tall, upright tree growth habit, reaching up to 30 ft tall with a spread of approximately 15 ft. Mangrove Trumpet Tree produces showy clusters of tubular, pink or purple flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Mangrove Trumpet Tree 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.

Mangrove Trumpet Tree thrives in full sun to partial shade.

Dolichandrone spathacea tolerates temperatures of 60–85°F. Mangrove Trumpet Tree prefers humidity levels of 40–70%.

Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Mangrove Trumpet Tree to prevent waterlogging, which leads to root rot and fungal issues.

Feed Mangrove Trumpet Tree 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 to partial shade and well-draining loamy soil with added compost for nutrients. Avoid low spots where water collects after rain.

Mangrove Trumpet Tree 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.

Mangrove Trumpet Tree can spread to about 15 ft (4.6 m) and reach about 30 ft (9 m) tall. Space plants about 15 ft (4.6 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 Mangrove Trumpet Tree 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.

Mangrove Trumpet Tree 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.

Mangrove Trumpet Tree can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to handkerchief tree plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Mangrove Trumpet Tree is susceptible to aphids, caterpillars. 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.

Mangrove Trumpet Tree grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. In cooler regions, grow Mangrove Trumpet Tree as a houseplant or bring it indoors before the first frost.