| http://members.iinet.net.au/~ewan/garden_thugs.pdf http://www.esc.nsw.gov.au/weeds/Sheets/herbs/H%20Succulents.htm http://www.weedscrc.org.au/documents/mr_waterwise_150307.pdf http://www.arc.govt.nz/environment/plants-and-animals/search-for-plants/index.cfm?63E0F20E-14C2-3D2D-B905-50098EBBE4B9&plantcode=Agaame http://www.sydneyweeds.org.au/weeds/centuary-plant.php http://members.iinet.com.au/~weeds/western_weeds/mono_alliaceae.htm http://www.pittwater.nsw.gov.au/environment/noxious_weeds/herbs/centuary_plant |