Galls lower flower values and increase the chance of rejection on quarantine grounds. Although these wasps are native to Western Australia, they have not yet caused a problem to our industry. They are probably being kept in check by native parasitic wasps. When a flower is sent to market it includes not only the flower head, but stem and leaves. Scale and gall forming insects may be found on the stem and leaves and may cause rejection if recognised by overseas authorities.
Flowers are a major source of food for many insects which feed on pollen or nectar.
These insects do not damage the flower but can cause rejection on quarantine grounds. They peak in the warmer spring weather, and pose a high quarantine risk if left unchecked. Efficient pest control Efficient pest control relies on an integrated control strategy which combines field control and post harvest control measures. Apply an appropriate insecticide spray often enough to control numbers. Treat flowers post harvest to kill and remove any remaining insects.