Bay sucker can affect the appearance of bay but does not usually reduce the vigour of bay plants.
- For light infestations pick off and dispose of infested leaves
- Badly affected shoots can be pruned out in winter. This will encourage new growth in the spring and may remove some overwintering adults
- If an insecticide is necessary and the plant is small enough to be sprayed, it can be treated with the ready-diluted formulation of the systemic insecticide thiacloprid (e.g. Provado Ultimate Bug Killer Ready To Use)
- If the leaves are being used for culinary purposes, a minimum 14-day interval must be left between spraying and using the leaves
- Only one application a year is permitted with this insecticide on herb plants, so it is important to apply it when signs of new damage are first seen, usually in May
Pesticides for gardeners (Adobe Acrobat pdf document outlining pesticides available to gardeners)