Glue ring
A glue ring is a poison-free way of pest control on stem plants. The glue is applied directly to the tree trunk as a ring or as a tape coated with glue around the trunk. The rings are designed to protect fruit and ornamental trees from pests that crawl up the trunk. The pest sticks to the glue ring and dies. If a coated tape is used, it must lie tightly and firmly against the trunk so that the butterflies or caterpillars cannot crawl under it. For this it is usually attached with binding wire. Glue rings should have a minimum width of 6 to 8 cm, since narrower obstacles can possibly be overcome by the pest .
The application is in early October against winter moth females , apple ermine moths and aphids and early March against ants and aphids .
Frostworm caterpillars damage trees by eating leaves and fruits. At the end of September the flightless females of the frost moth climb into the tree to lay their eggs. The glue ring prevents the pests from climbing up the tree. Thus, there is no feeding in spring.
Web links
- Leimring - environmentally friendly tree protection in autumn BUND eco-tips, September 2007
- The glue ring (PDF) Waldsassen environmental station
- Glue rings and catch belts can easily be confused. Two modes of action / two types of pests / two seasons for use.