What is causing notches on the edges of the leaves and eating the roots of my plants?
Posted by Dobies Staff on 12 December 2013 02:58 pm

Notches appearing on the leaf edges and the roots being eaten can be caused by the very common pest Vine Weevil.

Many types of plants can be attacked and can be frequently found on cyclamen, ferns, hydrangeas, primulas and strawberries. Attacks normally occur during spring and early summer, a second generation is present in late summer and autumn.

The adult can be found on plants at night feeding on the leaves resulting in notches around the leaf edges. The larvae which are a white, legless grub with a brown head cause the most damage to plants. They live in the soil and eat the plants roots. The plants wilt and die when there are insufficient roots to maintain a healthy plant.

Biological control of the larvae is the best method of controlling this pest. Nematodes are mixed with water and watered in to the pot or soil around the plants root area. These nematodes are perfectly safe to use and will only attack the larvae of the vine weevil.

We recommend Nemasys Vine Weevil Killer which is applied March to May and July to November when the soil temperature is above 5°C (40°F). 

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