Time to tackle African boxthorn

African boxthorn is a declared weed across the region, and landholders are responsible for its control.

Riverland District Officer Sally Crafter said it requires cool, moist conditions to grow, and after a few dry years there has been less opportunity to control it.

“The best time to control African boxthorn is when they’re showing signs of active growth. The record-breaking rainfall in May has caused this winter weed to thrive – so now is the time to act.” Sally said.

Methods of control include foliar spraying, cutting and swabbing with herbicide or manual removal. The landscape board is currently carrying out inspections and control work across the region, but coordinated action is key.

“Weeds don’t stop at fence lines. The most effective control happens when landholders work together with neighbours and the landscape board across the landscape.” Sally said.

African boxthorn is often found growing through native trees and bushes, where birds have left seeds, meaning it can go unseen until well established. Landholders are also encouraged to check areas previously treated, as new plants can establish over time.

“Controlling plants when they are young is the best option, but we don’t always find them before they grow large. Control methods will depend on the situation. If landholders need support or training on control methods or tools, the landscape board is here to help.”

Landholders have a responsibility under the Landscape South Australia Act 2019 to control African boxthorn on their property. For support to meet their obligations, landholders are encouraged to contact the Murraylands and Riverland Landscape Board on 8580 1800.

For more information on African boxthorn visit https://www.landscape.sa.gov.au/mr/pest-plants-animals/pest-plants/african-boxthorn-2

This project is supported by the Murraylands and Riverland Landscape Board through funding from the landscape levies.