The South African Landscaper's Institute (SALI) is joining the battle to fight the invasive polyphagous shot hole borer (PSHB) beetle that poses a serious threat to both exotic and indigenous trees across South Africa. The beetle is known to invade the host tree and bore holes in the branches. If undetected, it can destroy a tree within a relatively short period of time. Adult beetles invade a variety of tree species and dig tunnels to lay eggs. The PSHB beetles then transport a fungus which attacks the tree’s vascular tissue, causing a disease called fusarium dieback…
Published in Latest News