In June 2010 the Shire of Collie identified priority weeds for which strategies are to be developed to achieve identified objectives. The priority weeds and the identified objectives for each weed are as follows:
- American blackberry (Rubus laudatus) – eradicate all occurrences;
- Watsonia (Watsonia spp.) – reduce the number on Shire reserves and eradicate in revegetation or rehabilitation sites;
- Cotton Bush (Gomphocarpus fruticosus) – eradicate;
- Tagasaste (Chamaecytisus palmensis) – reduce the number on Shire reserves;
- Patterson’s Curse (Echium plantagineum) – reduce the number;
- Cape Tulip -
- St John’s Wort (Hypericum perforatum) -
Patterson’s Curse is declared as a P3 weed in the Shire which means that if these plants are found, by law the number of plants must be reduced.
The rationale for targeting American blackberry is detailed in the Blackberry Containment Zone information pdf file (see Related Documents on the right of this page). Further information about blackberries is available on the South West Catchment Councils website.
Alert weed species are those which are currently few in number and which should be eradicated as a priority to prevent further establishment and spread. In February 2011 the Shire identified the following species to be Alert weed species:
- Tree of Heaven (Ailanthus altissima) - See Related documents on right
- Italian Lavender (Lavandula stoechas) in natural areas (bush land) only
The Shire of Collie encourages people to report priority and alert weeds through the Department of Agriculture and Food’s Weed Watcher website, or to utilise forms derived from the website which can be obtained from the Shire office.
Control measures for these weeds can usually be found easily by searching the web using the scientific name. More information on each of these weeds will be provided on the Shire’s website as strategies are developed. The Bushland Weeds Manual is a particularly good resource.
Information for landholders regarding the alert weed species the “Tree of Heaven” (Ailanthus altissima) can be downloaded from Related Documents.
Boneseed is an Alert weed on a state level which was found in Collie in 2010. Therefore landholders are encouraged to become familiar with and report any occurrences of Boneseed. More information can be found in the related documents panel and at the Weeds of National Significance webpage. Please report potential Boneseed sightings to the Department of Agriculture and Food Pest Info line on 1800-084-881.