Pests and Diseases

Black Vine Weevil

The most destructive of the root weevils; most damage is done when in its larval form. A weevil needs two to three weeks of feeding on the leaves before it begins to lay eggs. The weevil then alternately feeds and lays eggs for about a month. You should notice damaged leaves. They are most active at night – during the day, the adult hides in dark places on the stems of very dense plants.


It is the larvae that are truly destructive to plants, living underground and eating the roots. Larval feeding starts midsummer when the eggs hatch and continues into autumn, restarting again in spring. Chemical treatments specific for vine weevil (e.g. Provado), applied by watering, will kill the grub. Normal insecticides should be used regularly to attack the beetle.