Guiana rubber tree Plant Care

Guiana rubber tree (Hevea guianensis) belongs to the Euphorbiaceae family within the Hevea genus. Guiana rubber tree is native to the rainforests of Ecuador, Venezuela, the Guyanas, Brazil, Colombia and Peru. Guiana rubber tree is also known as Para rubber tree.

Guiana rubber tree displays a tall, straight tree growth habit, reaching up to 80 ft tall with a spread of approximately 30 ft. Guiana rubber tree produces small, inconspicuous flowers.

Leaf size: approximately 6 inches.

Water a young or newly planted Guiana rubber tree 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.

Guiana rubber tree thrives in full sun.

Hevea guianensis tolerates temperatures of 65–85°F. Guiana rubber tree prefers humidity levels of 50–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining loamy soil mix with added organic matter. Good drainage is essential for Guiana rubber tree to prevent waterlogging, which leads to root rot and fungal issues.

Feed Guiana rubber tree every 8 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 and well-draining loamy soil mix with added organic matter. Avoid low spots where water collects after rain.

Guiana rubber 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.

Guiana rubber tree can spread to about 30 ft (9.1 m) and reach about 80 ft (24 m) tall. Space plants about 30 ft (9.1 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 Guiana rubber 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.

Guiana rubber 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.

Guiana rubber tree can be propagated through seeds, air-layering. Similar propagation techniques also apply to bentham's rubber tree plant care, which shares the same genus.

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Guiana rubber tree is susceptible to mealybugs, spider mites, 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.

Guiana rubber tree grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Guiana rubber tree is native to the rainforests of Ecuador, Venezuela, the Guyanas, Brazil, Colombia and Peru. In cooler regions, grow Guiana rubber tree as a houseplant or bring it indoors before the first frost.