Gorse the exotic species Gorse (Ulex europaeus)  Photo: Alan Page

overview - showcase - threatened - exotics

There's 403 exotic (introduced) flora species in the reserves of the GBMWHA.  55 of these are Priority Weeds in the Blue Mountains LGA and 17 are Weeds of National Significance.

Here's the list of the GBMWHA exotic flora species.

some background

Pampas Grass Pampas Grass  (Cortaderia selloana)
Photo: Alan Page
The Biosecurity Act 2015 places restrictions on plants that harm the environment, economy and community. Those plants are called "priority weeds" - replacing the term “noxious weeds”.

Priority weeds fall into three categories - state, regional and local - and it specifies the control measures that apply.

The GBMWHA is in four local land service regions - Greater Sydney, Hunter, Central Tablelands and South East.

It is also in ten local government areas - Blue Mountains, Cessnock, Hawkesbury, Lithgow City, Mid-Western Regional, Muswellbrook, Oberon, Singleton, Wingecarribee, Wollondilly.

The Blue Mountains is in the Greater Sydney Local Land Services region and the Blue Mountains LGA. This is the respective "regional" and "local" priority weeds used in my analysis.

the weeds

Spanish Heath Spanish Heath  (Erica lusitanica)
Photo: Alan Page


  1. This list was derived by selecting the GBMWHA reserves on PlantNET and BioNet. Selecting "introduced species" for the Blue Mountains LGA on PlantNet produces a similar number of species.
  2. A list of weeds is by its very nature variable, in that weeds can be invasive and eradication processes are ongoing.

The Blue Mountains City Council has produced an informative booklet on local priority weeds (8MB).

The Blue Mountains has a proud history of bushcare - here's more information and how to get involved.

The more well known local priority weeds are -

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