Pterandra isthmica Plant Care

Pterandra isthmica (Pterandra isthmica) belongs to the Malpighiaceae family within the Pterandra genus. Pterandra isthmica is native to Panama.

Pterandra isthmica displays a tall, upright shrub growth habit, reaching up to 5 ft tall with a spread of approximately 3 ft. Pterandra isthmica produces small, yellow flowers in clusters.

Leaf size: approximately 4 inches.

Water a young or newly planted Pterandra isthmica 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.

Pterandra isthmica thrives in full sun to partial shade.

Pterandra isthmica tolerates temperatures of 60–85°F. Pterandra isthmica prefers humidity levels of 40–70%.

Well-draining loamy soil with added organic matter for moisture retention. Good drainage is essential for Pterandra isthmica to prevent waterlogging, which leads to root rot and fungal issues.

Feed Pterandra isthmica 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.

Pterandra isthmica 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.

Pterandra isthmica can spread to about 3 ft (0.9 m) and reach about 5 ft (2 m) tall. Space plants about 3 ft (0.9 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 Pterandra isthmica 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.

Pterandra isthmica 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.

Pterandra isthmica can be propagated through seeds, stem cuttings.

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Pterandra isthmica 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.

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