Hibiscadelphus woodii Plant Care

Hibiscadelphus woodii (Hibiscadelphus woodii) belongs to the Malvaceae family within the Hibiscadelphus genus. Hibiscadelphus woodii is native to Kauai, Hawaii.

Hibiscadelphus woodii displays a tall, upright shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Hibiscadelphus woodii produces large, showy flowers in shades of red, pink, or orange.

Leaf size: approximately 8 inches.

Water a young or newly planted Hibiscadelphus woodii every 5–7 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.

Hibiscadelphus woodii thrives in full sun to partial shade.

Hibiscadelphus woodii tolerates temperatures of 60–85°F. Hibiscadelphus woodii prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining, slightly acidic soil with added organic matter like compost or peat moss. Good drainage is essential for Hibiscadelphus woodii to prevent waterlogging, which leads to root rot and fungal issues.

Feed Hibiscadelphus woodii 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, slightly acidic soil with added organic matter like compost or peat moss. Avoid low spots where water collects after rain.

Hibiscadelphus woodii 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.

Hibiscadelphus woodii 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 Hibiscadelphus woodii 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.

Hibiscadelphus woodii 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.

Hibiscadelphus woodii can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to maui hau hebe plant care, which shares the same genus.

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Hibiscadelphus woodii is susceptible to aphids, spider mites, whiteflies. 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.

Hibiscadelphus woodii grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Hibiscadelphus woodii is native to Kauai, Hawaii. In cooler regions, grow Hibiscadelphus woodii as a houseplant or bring it indoors before the first frost.