Argentine Star-apple Plant Care

Argentine Star-apple (Chrysophyllum marginatum) belongs to the Sapotaceae family within the Chrysophyllum genus. Argentine Star-apple is native to South America.

Argentine Star-apple displays a tall, evergreen tree growth habit, reaching up to 30 ft tall with a spread of approximately 15 ft. Argentine Star-apple produces small, fragrant white flowers in clusters.

Leaf size: approximately 6 inches.

Water a young or newly planted Argentine Star-apple 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.

Argentine Star-apple thrives in full sun to partial shade.

Chrysophyllum marginatum tolerates temperatures of 65–85°F. Argentine Star-apple 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 for moisture retention. Good drainage is essential for Argentine Star-apple to prevent waterlogging, which leads to root rot and fungal issues.

Feed Argentine Star-apple 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 for moisture retention. Avoid low spots where water collects after rain.

Argentine Star-apple is suited to USDA Zone 13b.

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.

Argentine Star-apple can spread to about 15 ft (4.6 m) and reach about 30 ft (9 m) tall. Space plants about 15 ft (4.6 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 Argentine Star-apple 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.

Argentine Star-apple 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.

Argentine Star-apple can be propagated through seeds, air-layering, stem cuttings.

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

Argentine Star-apple is susceptible to aphids, 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.

Argentine Star-apple grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Argentine Star-apple is native to South America. In cooler regions, grow Argentine Star-apple as a houseplant or bring it indoors before the first frost.