Wercklea grandiflora Plant Care

Wercklea grandiflora (Wercklea grandiflora) belongs to the Malvaceae family within the Wercklea genus. Wercklea grandiflora is native to Panama. Wercklea grandiflora is also known as Hawaiian sunset vine.

Wercklea grandiflora displays a tall, upright shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Wercklea grandiflora produces large, showy pink flowers with dark purple centers.

Leaf size: approximately 8 inches.

Water a young or newly planted Wercklea grandiflora every 7–10 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.

Wercklea grandiflora thrives in full sun to partial shade.

Wercklea grandiflora tolerates temperatures of 60–80°F. Wercklea grandiflora prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining loamy soil with added organic matter like compost. Good drainage is essential for Wercklea grandiflora to prevent waterlogging, which leads to root rot and fungal issues.

Feed Wercklea grandiflora 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 organic matter like compost. Avoid low spots where water collects after rain.

Wercklea grandiflora is suited to USDA Zone 10a – 11b.

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.

Wercklea grandiflora can spread to about 4 ft (1.2 m) and reach about 6 ft (2 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 tree spacing calculator.

Prune Wercklea grandiflora 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.

Wercklea grandiflora is frost-tender (hardy to USDA zone 10). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Wercklea grandiflora can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to wercklea intermedia plant care, which shares the same genus.

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

Wercklea grandiflora 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.

Wercklea grandiflora grows outdoors in USDA Zone 10a – 11b. It survives winters down to planting zone 10a. Wercklea grandiflora is native to Panama. In cooler regions, grow Wercklea grandiflora as a houseplant or bring it indoors before the first frost.