Autograph Tree Plant Care

Autograph Tree (Clusia portlandiana) belongs to the Clusiaceae family within the Clusia genus. Autograph Tree is also known as Balsam Apple.

Autograph Tree displays an upright, dense shrub growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Autograph Tree produces small, white, star-shaped flowers.

Leaf size: approximately 5 inches.

Water a young or newly planted Autograph Tree 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.

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

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

Well-draining sandy soil mix with added organic matter for moisture retention. Good drainage is essential for Autograph Tree to prevent waterlogging, which leads to root rot and fungal issues.

Feed Autograph Tree 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 sandy soil mix with added organic matter for moisture retention. Avoid low spots where water collects after rain.

Autograph Tree 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.

Autograph Tree 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 Autograph Tree 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.

Autograph Tree 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.

Autograph Tree can be propagated through air layering, stem cuttings. Similar propagation techniques also apply to autograph tree plant care, which shares the same genus.

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Autograph Tree is susceptible to mealybugs, 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.

Autograph Tree grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. In cooler regions, grow Autograph Tree as a houseplant or bring it indoors before the first frost.