Alternative Names. European Tree Mallow.
General Biology. Growth form. Herb. Life form. Perennial. Reproduction. Seed. Dispersal. Birds (through adhesion and ingestion), wind. Seedbank persistence. Long term, 5+ years.
Notes. A perennial or biennial species. Is invading seabird nesting habitats and replacing the native Malva priessiana on islands off the coast of Perth, South Australia and Victoria. Grows in tall dense clumps capable of outcompeting native perennial species. Stands have no understorey and die back in summer exposing the soil to erosion by strong sea breezes, increasing vulnerability to invasion by annual weeds, potentially making habitat less suitable to nesting bird colonies. Occasionally hybridises with M. priessiana (formerly M. australiana).
Additional information. Origin. Europe. Similar exotic species. Malva parviflora, M. multiflora. Similar native species. M. priessiana.
Suggested method of management and control. Cut to ground and paint stump with 15% glyphosate. Avoid hand removal of mature plants as this causes soil disturbance. Hand remove or carefully spot spray seedlings with glyphosate at 2-3 leaf stage. Read the manufacturers' labels and material safety data sheets before using herbicides. For further information consult the Australian Pesticides and Veterinary Medicines Authority to determine the status of permits for your situation or state.
|Manual Removal||O||Y||Y||O||Mannualy remove seedlings only|
Legend: Y = Yes, regularly, O = Occasionally, U = Uncertain, referred by others but not confirmed.