Allowoodsonia whitmorei Plant Care

Allowoodsonia whitmorei (Allowoodsonia whitmorei) belongs to the Apocynaceae family within the Allowoodsonia genus. Allowoodsonia whitmorei is native to the Solomon Islands in the SW Pacific.

Allowoodsonia whitmorei displays a tall, upright tree growth habit, reaching up to 10 ft tall with a spread of approximately 5 ft. Allowoodsonia whitmorei produces clusters of small, fragrant white flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Allowoodsonia whitmorei 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.

Allowoodsonia whitmorei thrives in bright indirect light. Avoid placing Allowoodsonia whitmorei in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Allowoodsonia whitmorei tolerates temperatures of 65–80°F. Allowoodsonia whitmorei prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining, rich potting mix with added perlite for drainage. Good drainage is essential for Allowoodsonia whitmorei to prevent waterlogging, which leads to root rot and fungal issues.

Feed Allowoodsonia whitmorei 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 bright indirect light and well-draining, rich potting mix with added perlite for drainage. Avoid low spots where water collects after rain.

Allowoodsonia whitmorei is suited to USDA Zone 11b – 12b.

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.

Allowoodsonia whitmorei can spread to about 5 ft (1.5 m) and reach about 10 ft (3 m) tall. Space plants about 5 ft (1.5 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 Allowoodsonia whitmorei 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.

Allowoodsonia whitmorei is frost-tender (hardy to USDA zone 11). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Allowoodsonia whitmorei can be propagated through stem cuttings, air layering.

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

Allowoodsonia whitmorei is susceptible to mealybugs, 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.

Allowoodsonia whitmorei grows outdoors in USDA Zone 11b – 12b. It survives winters down to planting zone 11b. Allowoodsonia whitmorei is native to the Solomon Islands in the SW Pacific. In cooler regions, grow Allowoodsonia whitmorei as a houseplant or bring it indoors before the first frost.