Calabash nutmeg Plant Care

Calabash nutmeg (Monodora undulata) belongs to the Annonaceae family within the Monodora genus. Calabash nutmeg is native to Cameroon, the Central African Republic, Ghana, Guinea, Ivory Coast, Liberia, Nigeria and Sierra Leone. Calabash nutmeg is also known as African nutmeg, Jamaican nutmeg.

Calabash nutmeg displays a tall tree, spreading canopy growth habit, reaching up to 30 ft tall with a spread of approximately 20 ft. Calabash nutmeg produces large, fragrant flowers with unique shape and color patterns.

Leaf size: approximately 8 inches.

Water a young or newly planted Calabash nutmeg 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.

Calabash nutmeg thrives in partial shade to full sun.

Monodora undulata tolerates temperatures of 65–85°F. Calabash nutmeg prefers humidity levels of 50–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Rich, well-draining soil with added organic matter like compost or peat moss. Good drainage is essential for Calabash nutmeg to prevent waterlogging, which leads to root rot and fungal issues.

Feed Calabash nutmeg 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 added organic matter like compost or peat moss. Avoid low spots where water collects after rain.

Calabash nutmeg is suited to USDA Zone 11a – 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.

Calabash nutmeg can spread to about 20 ft (6.1 m) and reach about 30 ft (9 m) tall. Space plants about 20 ft (6.1 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 Calabash nutmeg 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.

Calabash nutmeg 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.

Calabash nutmeg can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to calabash nutmeg plant care, which shares the same genus.

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Calabash nutmeg is susceptible to spider mites, scale insects, mealybugs. 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.

Calabash nutmeg grows outdoors in USDA Zone 11a – 12b. It survives winters down to planting zone 11a. Calabash nutmeg is native to Cameroon, the Central African Republic, Ghana, Guinea, Ivory Coast, Liberia, Nigeria and Sierra Leone. In cooler regions, grow Calabash nutmeg as a houseplant or bring it indoors before the first frost.