Unonopsis spectabilis Plant Care

Unonopsis spectabilis (Unonopsis spectabilis) belongs to the Annonaceae family within the Unonopsis genus. Unonopsis spectabilis is native to Venezuela.

Unonopsis spectabilis displays a small to medium-sized tree growth habit, reaching up to 15 ft tall with a spread of approximately 10 ft. Unonopsis spectabilis produces fragrant, small yellow flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Unonopsis spectabilis 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.

Unonopsis spectabilis thrives in partial shade to full sun.

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

Rich, well-draining soil with high organic content. Good drainage is essential for Unonopsis spectabilis to prevent waterlogging, which leads to root rot and fungal issues.

Feed Unonopsis spectabilis 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 partial shade to full sun and rich, well-draining soil with high organic content. Avoid low spots where water collects after rain.

Unonopsis spectabilis 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.

Unonopsis spectabilis can spread to about 10 ft (3 m) and reach about 15 ft (5 m) tall. Space plants about 10 ft (3 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 Unonopsis spectabilis 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.

Unonopsis spectabilis 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.

Unonopsis spectabilis can be propagated through seeds, air-layering.

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

Unonopsis spectabilis is susceptible to aphids, scale insects, spider mites. 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.

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