Taxonomic name:Acacia retinodes Schltdl. Synonyms:Acacia floribunda sensu auct., Acacia fragrans Pottier, Acacia longissima Chopinet, Acacia provincialis A. Camus, Acacia retinodes Schltdl. var. floribunda H.Vilm., Acacia retinoide Schltr., Acacia retinoides Schltr., Acacia rhetinoides Schltr., Acacia rostellifera sensu auct., Acacia semperflorens A. Berger Common names: Akatziya Stoikaya (Russian), everblooming acacia, silver wattle, swamp wattle, wirilda Organism type: tree
Water wattle (Acacia retinodes) is a small tree native to Australia. It is cultivated as an ornamental tree in warmer parts of the world. It is known to have naturalised in California where it has spread from its initial plantings.
Description Water wattles are large shrubs or small trees with five inch long linear-lanceolate phyllodes. Please follow this link for images of water wattle
Geographical range Native range: Australia- Tasmania (ILDIS, 2010) Known introduced range: Ethiopia; South Africa; India; Indonesia- Java; Russian Federation (Asia); Azores; Balearic Is.; France; Great Britain; Italy; Portugal; Romania; Spain; Mauritius, Cyprus, New Zealand (ILDIS, 2010). United States - California, Florida and Hawaii. Gibralter (Varnham, 2009)
Management information Preventative measures: Acacia retinodes is listed as an invasive alien species in Legislation (Decreto - Lei 565/99) declared by Portugal in 1999. These new regulations will imply to inspections of the horticultural sector (e.g. nurserymen, landscape designers, gardeners) and the use of these species will incur a penalty (EPPO, Reporting Service 2006).
Management options include girdling and pulling out seedlings and young plants. Chemical options include herbicide application through cut stump or basal bark methods.
Compiled by: IUCN SSC Invasive Species Specialist Group (ISSG) with support from the Overseas Territories Environmental Programme (OTEP) project XOT603, a joint project with the Cayman Islands Government - Department of Environment