Invasive Shot Hole Borer Threat
Category News
The invasive Polyphagous Shot Hole Borer (PSHB) beetle, native to Southeast Asia, has been detected in Newlands, threatening both alien and indigenous trees. This tiny black beetle (about 2 mm long) burrows into trees to lay eggs and introduces the *Fusarium euwallaceae* fungus, which disrupts the tree's water transport system, leading to branch dieback and eventual death. Affected trees include London planes, Japanese maples, and Cape willows. Homeowners are urged to inspect their gardens for signs of infestation, such as small holes with oozing sap or sawdust-like residue, and take immediate action. To prevent its spread, authorities recommend chipping and bagging infested wood for sun exposure or incineration, avoiding the movement of firewood from affected areas, and recognizing that pesticides have limited effectiveness ([](https://resource.capetown.gov.za/documentcentre/Documents/Forms,%20notices,%20tariffs%20and%20lists/CityNews_63_CENTRAL.pdf)).
Author: Andre Kritzinger
