Harungana

• Tree up to 10–15m tall.
• Exudes orange, paint-like sap when branches or leaves are broken off.
• Leaves are dark green, broad, egg-shaped, opposite, 10–20cm long, 6–10cm wide.
• Flowers are whitish, very small, fragrant, dotted with black glands.
• Fruits are orange-brown, small, fleshy, 2–3mm, with 2–4 seeds each.

• Favours watercourses, rainforest edges and roads.
• In North Queensland, grows on well drained soils and also withstands poor drainage on alluvium.

• Visit Weeds Australia and click on the distribution tab to access the distribution map.

• Flowers all year, mostly during late spring and early summer.

Environmental

• Forms dense thickets from root suckers, excluding all other species.
• Invades cyclone-damaged rainforest and gaps in rainforest caused by fallen trees or landslips.

• Seeds spread by animals, water and machinery.
• Also spread by suckering.

• Find out how farmers can prevent weed spread.
• Find out how gardeners and outdoor enthusiasts can prevent weed spread.

Physical control

• Do not undertake physical control without subsequent herbicide control as physical disturbance could cause tree to sucker from roots left in soil.

Herbicide control

• No herbicide currently registered for control in Queensland.
• An off-label use permit allows use of various herbicides for control of environmental weeds in non-agricultural areas, bushland and forests.
• Treated areas should be monitored regularly for any new seedlings or regrowth.

Read the harungana fact sheet (PDF, 561KB) for herbicide control and application rates.

Biological control

• No known biological control agents.

• Harungana is a category 3 restricted invasive plant under the Biosecurity Act 2014.
• It must not be given away, sold, or released into the environment. Penalties may apply.
• You must take all reasonable and practical measures to minimise the biosecurity risks associated with dealing with Harungana under your control. This is called a general biosecurity obligation (GBO).
• At a local level, each local council must have a biosecurity plan that covers invasive plants in its area. This plan may include actions to be taken on Harungana. Some of these actions may be required under local laws. Contact your local council for more information.