What are African Black Beetles?
Both the adult and larval stages of the African Black Beetle can cause
damage to roots of a wide variety of plants. The favoured plant of the
black beetle is grass. The adult beetles appear in Spring and can lay
large numbers of eggs so treatment is important. They may cause some
damage but the larvae (curl grubs) are voracious feeders and will cause
significant damage if left untreated.
What are the symptoms?
The grass dies in patches for no apparent reason. The lawn has a
damaged root system and looks brown or discoloured. In lawns heavily
affected with larvae, grass turns yellow then brown and dies and the
lawn can be lifted and rolled back like a carpet.