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Biological control of invasive non-native riparian weeds 2017-2020: Japanese knotweed (JK); Himalayan balsam (HB); Floating pennywort (FP); and Australian swamp stonecrop (ASSC). - BE0177

The aim of this project is to build on and enhance the work undertaken previously in order to develop effective biological control of four invasive weeds. The invasive, non-native riparian weeds Japanese knotweed (JK, Fallopia japonica), Himalayan balsam (HB, Impatiens glandulifera), floating pennywort (FP, Hydrocotyle ranunculoides) and Australian swamp stonecrop (ASSC, Crassula helmsii) can have major impacts on invaded water bodies and connected habitats by reducing biodiversity, restricting access, increasing flood risks and impeding transport and recreation. Due to the proximity to water the conventional means for control are often limited, requiring for potential biocontrol methods.
To offer a more environmentally sensitive and sustainable alternative to conventional control methods. Objective to do this though classical biological control using damaging and host specific natural enemies from the respective native ranges of the plant species.

Project Documents
• FRP - Final Report : 2017-20 - Final Report on Invasive non-native riparian weeds   (460k)
Time-Scale and Cost
From: 2017

To: 2020

Cost: £555,000
Contractor / Funded Organisations
Alien Species