Weed Potential 
As a weed the Peppercorn Tree is invasive in drier regions appearing along seasonal water courses, woodlands and on in disturbed soils. It grows in open to exposed positions tolerating hot conditions and competes for nutrients. 

It infests areas slowly and left unchecked it will form stands that help increase erosion inhibiting the regeneration of local native tree or shrub seedlings. Trees may produce fruit throughout the year and the seeds are dispersed by birds or animals and in garden waste.   

Control methods include physically digging out seedlings and small plants when the soil is moist ensuring that the roots are removed as the young trunks snap off easily. 

The fruiting branches should be bagged and destroyed. Young trees can be cut and painted on the stems with the sap wood revealed or larger trees can be drilled at the base and injected with a non-selective herbicide during the growing period. 

Young plants or seedlings may be sprayed with a non-selective herbicide during spring while the plant is actively growing. Follow up applications may be requires as the saplings can re-shoots.