Weeds of National Significance

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Parkinsonia aculeata is ranked as the worst weed in Australia.[1]

Weeds of National Significance (WoNS) is a list of the most problematic plant species in Australia as determined by the federal government. Initially a list of 20 taxa were listed and given a rank based on invasiveness, impacts, potential for spread, and socioeconomic and environmental values.[1] An expanded list of 32 taxa was released in April 2012.

List of taxa[edit]

Note: The list of individual taxa is greater than the 32 WoNS.

Common name[2] Scientific name
African boxthorn Lycium ferocissimum
Alligator weed Alternanthera philoxeroides
Asparagus fern Asparagus aethiopicus
Asparagus fern Asparagus scandens
Athel pine Tamarix aphylla
Bitou bush, boneseed Chrysanthemoides monilifera subsp. monilifera and rotundata
Blackberry Rubus fruticosus agg.
Bridal creeper Asparagus asparagoides
Bridal veil creeper Asparagus declinatus
Broom Cytisus scoparius
Cabomba Cabomba caroliniana
Cats claw vine Dolichandra unguis-cati
Chilean needle grass Nassella neesiana
Climbing asparagus Asparagus africanus
Climbing asparagus fern Asparagus plumosus
Cotton-leaved physic-nut Jatropha gossypifolia
Delta arrowhead Sagittaria platyphylla
Fireweed Senecio madagascariensis
Flax-leaved broom Genista linifolia
Gamba grass Andropogon gayanus
Gorse Ulex europaeus
Hymenachne Hymenachne amplexicaulis
Lantana Lantana camara
Mesquite Prosopis spp.
Maderia vine Anredera cordifolia
Mimosa Mimosa pigra
Montpellier broom Genista monspessulana
Parkinsonia Parkinsonia aculeata
Parthenium weed Parthenium hysterophorus
Pond apple Annona glabra
Prickly acacia Vachellia nilotica ssp. indica
Prickly pear Austrocylindropuntia spp.
Prickly pear Cylindropuntia spp.
Prickly pear Opuntia spp.
Rubber vine Cryptostegia grandiflora
Salvinia Salvinia molesta
Serrated tussock Nassella trichotoma
Silver nightshade Solanum elaeagnifolium
Water hyacinth Eichhornia crassipes
Willows except weeping willows, pussy willow and sterile pussy willow Salix spp. except S. babylonica, S. X calodendron and S. X reichardtiji

See also[edit]


  1. ^ a b Thorp, John R; Rod Lynch (2000). The determination of weeds of national significance. Launceston, Tas.; Canberra, ACT: National Weeds Strategy Executive Committee. ISBN 9780642449139. Archived from the original on 2008-07-22.
  2. ^ "Weeds of National Significance (WONS)". Department of Sustainability, Environment, Water, Population and Communities. 14 August 2012. Retrieved 25 August 2012.

External links[edit]