Dammar Plant Care

Dammar (Agathis labillardierei) belongs to the Araucariaceae family within the Agathis genus. Dammar is native to the island of New Guinea.

Dammar displays a tall, conical tree growth habit, reaching up to 100 ft tall with a spread of approximately 30 ft. Dammar produces small male and female cones.

Leaf size: approximately 6 inches.

Water a young or newly planted Dammar 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.

Dammar thrives in full sun to partial shade.

Agathis labillardierei tolerates temperatures of 60–80°F. Dammar prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Well-draining, acidic soil mix with added organic matter like peat moss or pine bark. Good drainage is essential for Dammar to prevent waterlogging, which leads to root rot and fungal issues.

Feed Dammar 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 to partial shade and well-draining, acidic soil mix with added organic matter like peat moss or pine bark. Avoid low spots where water collects after rain.

Dammar is suited to USDA Zone 10b – 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.

Dammar can spread to about 30 ft (9.1 m) and reach about 100 ft (30 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 Dammar 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.

Dammar is frost-tender (hardy to USDA zone 10). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Dammar can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to pacific kauri plant care, which shares the same genus.

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Dammar is susceptible to aphids, 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.

Dammar grows outdoors in USDA Zone 10b – 12b. It survives winters down to planting zone 10b. Dammar is native to the island of New Guinea. In cooler regions, grow Dammar as a houseplant or bring it indoors before the first frost.