Crassula helmsii: Surround with wire mesh
Overall effectiveness category No evidence found (no assessment)
Number of studies: 0
Background information and definitions
C. helmsii can easily spread by regenerating from small fragments of plant material (Dawson & Warman 1987). Fine wire mesh (5 mm) can reduce the spread of C. helmsii by minimising movement of plant fragments to new areas. Mesh may need to fully surround the area of C. helmsii, including over the top of the affected area, to prevent spread by birds. This may be particularly important during physical disturbance caused by control treatments.
Dawson F. H. & Warman E.A. (1987) Crassula helmsii (T. Kirk) Cockayne: Is it an aggressive alien aquatic plant in Britain? Biological Conservation, 42, 247-272.