Sorry, the document appears to be unavailable. Please contact the AER administrator. Controlling New Zealand pygmyweed Crassula helmsii using hot foam, herbicide and by burying at Old Moor RSPB Reserve, South Yorkshire, England. Published online23 Apr 2010Content typeJournal articleJournal titleConservation Evidence Author(s)Bridge, T. Publication languageEnglishLocationUK & England & New Zealand Key wordsaquatic organismsaquatic plantsaquatic weedsherbicidesintroduced speciesinvasive speciesnature conservationnature reservespesticidesweed controlweeds