Japanese knotweed is deemed to be one of the worst invasive species in Great Britain. The only effective method of controlling it was to use strong chemicals, however this method is unsustainable and is costing over £165 million a year. A scientific team from CABI led research to find a psyllid (Aphalara itadori) which feeds soley on Japanese knotweed. By feeding on the sap found in the stem of the plant, the psyllid helps to control the spread of Japanese knotweed.
More recently, CABI released a rust fungus as part of field trials to control the non-native, invasive weed Himalayan balsam (Impatiens glandulifera) using natural means.
Himalayan balsam is an environmentally damaging weed and its large scale control is virtually impossible. The rust fungus is a novel solution to control this pervasive weed.
Here's a video about the invasive weed and our research